diff --git a/win32/snes9xw.vcxproj b/win32/snes9xw.vcxproj
index b1bb8881..4551cce6 100644
--- a/win32/snes9xw.vcxproj
+++ b/win32/snes9xw.vcxproj
@@ -131,7 +131,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>Default</CompileAs>
       <ForcedIncludeFiles>_tfwopen.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
-      <AdditionalOptions>$(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:__cplusplus $(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -180,7 +180,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>Default</CompileAs>
       <ForcedIncludeFiles>_tfwopen.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
-      <AdditionalOptions>$(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:__cplusplus $(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -235,7 +235,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>Default</CompileAs>
       <ForcedIncludeFiles>_tfwopen.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
-      <AdditionalOptions>$(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:__cplusplus $(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -288,7 +288,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>Default</CompileAs>
       <ForcedIncludeFiles>_tfwopen.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
-      <AdditionalOptions>$(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:__cplusplus $(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>