diff --git a/visualc/vngspice.vcproj b/visualc/vngspice.vcproj
index c87957b23..83aa93849 100644
--- a/visualc/vngspice.vcproj
+++ b/visualc/vngspice.vcproj
@@ -29,7 +29,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)\$(PlatformName)\conf.obj
..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1
..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -116,7 +115,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)64\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -387,7 +385,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -473,7 +470,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)64\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
diff --git a/visualc/vngspice.vcxproj b/visualc/vngspice.vcxproj
index b5bb02733..ea6214335 100644
--- a/visualc/vngspice.vcxproj
+++ b/visualc/vngspice.vcxproj
@@ -144,12 +144,10 @@
     <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)64\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)64\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</OutDir>
@@ -160,12 +158,10 @@
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">$(Configuration)\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">$(Configuration)64\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">$(Configuration)64\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_release|Win32'">$(Configuration)\</OutDir>
diff --git a/visualc/vngspice_fftw.vcproj b/visualc/vngspice_fftw.vcproj
index 553548321..55a8e75e5 100644
--- a/visualc/vngspice_fftw.vcproj
+++ b/visualc/vngspice_fftw.vcproj
@@ -29,7 +29,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1&#x0D;&#x0A;lib /machine:x86 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.def /out:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.lib"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -118,7 +117,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)64\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1&#x0D;&#x0A;lib /machine:x64 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll64\libfftw3-3.def /out:$(ProjectDir)fftw3\fftw-3.3.3-dll64\libfftw3-3.lib"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -395,7 +393,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1&#x0D;&#x0A;lib /machine:x86 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.def /out:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.lib"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -483,7 +480,6 @@
 				Name="VCPreBuildEventTool"
 				Description="Recompile conf.c with actual date, invoke win_bison"
 				CommandLine="del $(ConfigurationName)64\$(PlatformName)\conf.obj&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=inpptree-parser.c --defines=inpptree-parser.h ..\src\spicelib\parser\inpptree-parser.y || exit 1&#x0D;&#x0A;..\..\flex-bison\win_bison.exe --output=parse-bison.c --defines=parse-bison.h ..\src\frontend\parse-bison.y || exit 1&#x0D;&#x0A;lib /machine:x64 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll64\libfftw3-3.def /out:$(ProjectDir)fftw3\fftw-3.3.3-dll64\libfftw3-3.lib"
-				ExcludedFromBuild="false"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
diff --git a/visualc/vngspice_fftw.vcxproj b/visualc/vngspice_fftw.vcxproj
index 667e94372..a6804c7ac 100644
--- a/visualc/vngspice_fftw.vcxproj
+++ b/visualc/vngspice_fftw.vcxproj
@@ -157,12 +157,10 @@
     <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)64\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)64\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</OutDir>
@@ -173,12 +171,10 @@
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">$(Configuration)\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='console_debug|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">$(Configuration)64\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">$(Configuration)64\$(Platform)\</IntDir>
-    <PreBuildEventUseInBuild Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">true</PreBuildEventUseInBuild>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='console_debug|x64'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='console_release|Win32'">$(Configuration)\</OutDir>