diff --git a/.github/workflows/msbuild.yml b/.github/workflows/msbuild.yml
index 6e4381c..fea1b08 100644
--- a/.github/workflows/msbuild.yml
+++ b/.github/workflows/msbuild.yml
@@ -41,7 +41,7 @@ jobs:
 
     - name: Build RebootS20
       working-directory: ${{env.GITHUB_WORKSPACE}}
-      run: msbuild /p:DefineConstants=ABOVE_S20 ${{env.SOLUTION_FILE_PATH}} /t:Clean,Build /p:Configuration=Release
+      run: msbuild ${{env.SOLUTION_FILE_PATH}} /p:AboveS20=TRUE /t:Clean,Build /p:Configuration=Release
 
     - name: Upload Artifact with ABOVE_S20
       uses: actions/upload-artifact@v3
diff --git a/Project Reboot 3.0/Project Reboot 3.0.vcxproj b/Project Reboot 3.0/Project Reboot 3.0.vcxproj
index d346fac..921d318 100644
--- a/Project Reboot 3.0/Project Reboot 3.0.vcxproj	
+++ b/Project Reboot 3.0/Project Reboot 3.0.vcxproj	
@@ -78,6 +78,7 @@
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;_DEBUG;PROJECTREBOOT30_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(AboveS20)'!=''">ABOVE_S20;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
@@ -100,6 +101,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;NDEBUG;PROJECTREBOOT30_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(AboveS20)'!=''">ABOVE_S20;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
@@ -124,6 +126,7 @@
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_DEBUG;PROJECTREBOOT30_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(AboveS20)'!=''">ABOVE_S20;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
@@ -146,6 +149,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>NDEBUG;PROJECTREBOOT30_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(AboveS20)'!=''">ABOVE_S20=$(AboveS20);%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
@@ -513,4 +517,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>