diff --git a/visualc/vngspice.vcproj b/visualc/vngspice.vcproj
index 6fbcb1ec8..2476f2b25 100644
--- a/visualc/vngspice.vcproj
+++ b/visualc/vngspice.vcproj
@@ -52,7 +52,6 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="1"
 				RuntimeTypeInfo="false"
-				OpenMP="false"
 				UsePrecompiledHeader="0"
 				WarningLevel="4"
 				DebugInformationFormat="4"
@@ -142,7 +141,6 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
 				RuntimeTypeInfo="true"
-				OpenMP="false"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
@@ -1044,6 +1042,7 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
 				RuntimeTypeInfo="true"
+				OpenMP="true"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
diff --git a/visualc/vngspice.vcxproj b/visualc/vngspice.vcxproj
index b3b6adb36..d6db4d64b 100644
--- a/visualc/vngspice.vcxproj
+++ b/visualc/vngspice.vcxproj
@@ -212,7 +212,6 @@
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <RuntimeTypeInfo>false</RuntimeTypeInfo>
-      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
@@ -255,7 +254,6 @@
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <RuntimeTypeInfo>true</RuntimeTypeInfo>
-      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
@@ -713,6 +711,7 @@
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <RuntimeTypeInfo>true</RuntimeTypeInfo>
+      <OpenMPSupport>true</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
diff --git a/visualc/vngspice_fftw.vcproj b/visualc/vngspice_fftw.vcproj
index 879993107..0077400b9 100644
--- a/visualc/vngspice_fftw.vcproj
+++ b/visualc/vngspice_fftw.vcproj
@@ -52,7 +52,6 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="1"
 				RuntimeTypeInfo="false"
-				OpenMP="false"
 				UsePrecompiledHeader="0"
 				WarningLevel="4"
 				DebugInformationFormat="4"
@@ -144,7 +143,6 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
 				RuntimeTypeInfo="true"
-				OpenMP="false"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
@@ -1066,6 +1064,7 @@
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
 				RuntimeTypeInfo="true"
+				OpenMP="true"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				DebugInformationFormat="3"
diff --git a/visualc/vngspice_fftw.vcxproj b/visualc/vngspice_fftw.vcxproj
index 8e3d585d6..8ae046853 100644
--- a/visualc/vngspice_fftw.vcxproj
+++ b/visualc/vngspice_fftw.vcxproj
@@ -214,7 +214,6 @@ lib /machine:x86 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.def /out:$(
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <RuntimeTypeInfo>false</RuntimeTypeInfo>
-      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
@@ -262,7 +261,6 @@ lib /machine:x86 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll32\libfftw3-3.def /out:$(
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <RuntimeTypeInfo>true</RuntimeTypeInfo>
-      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
@@ -770,6 +768,7 @@ lib /machine:x64 /def:$(ProjectDir)fftw3\fftw-3.3.3-dll64\libfftw3-3.def /out:$(
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <RuntimeTypeInfo>true</RuntimeTypeInfo>
+      <OpenMPSupport>true</OpenMPSupport>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>