diff --git a/buildispc.bat b/buildispc.bat
index c06efdc2..ba606faa 100644
--- a/buildispc.bat
+++ b/buildispc.bat
@@ -2,8 +2,8 @@
 
 REM If LLVM_INSTALL_DIR isn't set globally in your environment,
 REM it can be set here_
-set LLVM_INSTALL_DIR=c:\users\mmp\llvm-dev
-set LLVM_VERSION=3.2
+REM set LLVM_INSTALL_DIR=c:\users\mmp\llvm-dev
+REM set LLVM_VERSION=3.2
 
 REM Both the LLVM binaries and python need to be in the path
 set path=%LLVM_INSTALL_DIR%\bin;%PATH%;c:\cygwin\bin
diff --git a/ispc.vcxproj b/ispc.vcxproj
index 711ae9c0..a580ce84 100755
--- a/ispc.vcxproj
+++ b/ispc.vcxproj
@@ -380,7 +380,7 @@
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>NOMINMAX;LLVM_3_1</PreprocessorDefinitions>
+      <PreprocessorDefinitions>NOMINMAX;%LLVM_VERSION%</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(LLVM_INSTALL_DIR)\include;.;.\winstuff;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4146;4800;4996;4355;4624</DisableSpecificWarnings>
     </ClCompile>
@@ -398,7 +398,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>NOMINMAX;LLVM_3_1</PreprocessorDefinitions>
+      <PreprocessorDefinitions>NOMINMAX;%LLVM_VERSION%</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(LLVM_INSTALL_DIR)\include;.;.\winstuff;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4146;4800;4996;4355;4624</DisableSpecificWarnings>
     </ClCompile>