diff --git a/visualc/make-install-vngspice.bat b/visualc/make-install-vngspice.bat
index 5ccbc7063..e199647c2 100644
--- a/visualc/make-install-vngspice.bat
+++ b/visualc/make-install-vngspice.bat
@@ -32,7 +32,7 @@ goto end
 
 :copy2
 copy %1\ngspice.exe %dst%\bin\
-copy ..\..\fftw-3.3.5-dll32\libfftw3-3.dll %dst%\bin\
+copy ..\..\fftw-3.3-dll32\libfftw3-3.dll %dst%\bin\
 goto end
 
 :b64
@@ -62,6 +62,6 @@ goto end
 
 :copy2-64
 copy %1\ngspice.exe %dst%\bin\
-copy ..\..\fftw-3.3.5-dll64\libfftw3-3.dll %dst%\bin\
+copy ..\..\fftw-3.3-dll64\libfftw3-3.dll %dst%\bin\
 
 :end
diff --git a/visualc/vngspice-fftw.vcxproj b/visualc/vngspice-fftw.vcxproj
index 6cdcd6c09..d697289c8 100644
--- a/visualc/vngspice-fftw.vcxproj
+++ b/visualc/vngspice-fftw.vcxproj
@@ -202,11 +202,11 @@
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;NGDEBUG;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -237,7 +237,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspiced.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -246,14 +246,14 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -287,7 +287,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -296,14 +296,14 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;NGDEBUG;CONFIG64;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -334,7 +334,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspiced.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>
@@ -343,7 +343,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
@@ -353,7 +353,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;CONFIG64;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -389,7 +389,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>
@@ -398,11 +398,11 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;NGDEBUG;CONSOLE;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -433,7 +433,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspiced.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -442,14 +442,14 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;CONSOLE;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -483,7 +483,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -492,14 +492,14 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;NGDEBUG;CONSOLE;CONFIG64;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -530,7 +530,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspiced.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>
@@ -539,7 +539,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
@@ -549,7 +549,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;CONSOLE;CONFIG64;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -583,7 +583,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>
@@ -592,14 +592,14 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;USE_OMP;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -634,7 +634,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -643,7 +643,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
@@ -653,7 +653,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;USE_OMP;CONFIG64;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -690,7 +690,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>
@@ -699,14 +699,14 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x86 /def:..\..\fftw-3.3-dll32\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll32;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;CONSOLE;USE_OMP;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -741,7 +741,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll32\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll32\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw
       </Command>
     </PostBuildEvent>
@@ -750,7 +750,7 @@ lib /machine:x86 /def:..\..\fftw-3.3.5-dll32\libfftw3-3.def /out:$(IntDir)libfft
     <PreBuildEvent>
       <Message>force recompilation of conf.c with actual date</Message>
       <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj
-lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
+lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3-3.lib</Command>
     </PreBuildEvent>
     <Midl>
       <TargetEnvironment>X64</TargetEnvironment>
@@ -760,7 +760,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3.5-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;..\..\fftw-3.3-dll64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;CONSOLE;CONFIG64;USE_OMP;HAVE_LIBFFTW3;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>false</MinimalRebuild>
       <ExceptionHandling>
@@ -795,7 +795,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.5-dll64\libfftw3-3.def /out:$(IntDir)libfft
     </Link>
     <PostBuildEvent>
       <Command>
-      copy /y "..\..\fftw-3.3.5-dll64\libfftw3-3.dll" "$(OutDir)"
+      copy /y "..\..\fftw-3.3-dll64\libfftw3-3.dll" "$(OutDir)"
       make-install-vngspice.bat $(OutDir) fftw 64
       </Command>
     </PostBuildEvent>