diff --git a/extensions/cstrike/msvc9/cstrike.vcproj b/extensions/cstrike/msvc9/cstrike.vcproj
index 53db1819..f08b6bfd 100644
--- a/extensions/cstrike/msvc9/cstrike.vcproj
+++ b/extensions/cstrike/msvc9/cstrike.vcproj
@@ -535,7 +535,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
-				AdditionalOptions="/D SE_EPISODEONE=1 /D SE_DARKMESSIAH=2 /D SE_ORANGEBOX=3 /D SE_BLOODYGOODTIME=4 /D SE_EYE=5 /D SE_ORANGEBOXVALVE=6 /D SE_LEFT4DEAD=7 /D SE_LEFT4DEAD2=8 /D SE_ALIENSWARM=9 /D SE_PORTAL2=10 /D SE_CSGO=11"
+				AdditionalOptions="/D SE_EPISODEONE=1 /D SE_DARKMESSIAH=2 /D SE_ORANGEBOX=3 /D SE_BLOODYGOODTIME=4 /D SE_EYE=5 /D SE_ORANGEBOXVALVE=6 /D SE_LEFT4DEAD=7 /D SE_LEFT4DEAD2=8 /D SE_ALIENSWARM=9 /D SE_PORTAL2=10 /D SE_CSGO=11 /D COMPILER_MSVC /D COMPILER_MSVC32"
 				Optimization="0"
 				AdditionalIncludeDirectories="..;..\sdk;..\..\..\public;..\..\..\public\sourcepawn;..\..\..\public\extensions;&quot;$(HL2SDK-CSGO)\public&quot;;&quot;$(HL2SDK-CSGO)\public\game\server&quot;;&quot;$(HL2SDK-CSGO)\public\engine&quot;;&quot;$(HL2SDK-CSGO)\public\tier0&quot;;&quot;$(HL2SDK-CSGO)\public\tier1&quot;;&quot;$(MMSOURCE18)\core&quot;;&quot;$(MMSOURCE18)\core\sourcehook&quot;"
 				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;CSTRIKE_EXPORTS;_CRT_SECURE_NO_DEPRECATE;SOURCEMOD_BUILD;SOURCE_ENGINE=11"
@@ -618,7 +618,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
-				AdditionalOptions="/D SE_EPISODEONE=1 /D SE_DARKMESSIAH=2 /D SE_ORANGEBOX=3 /D SE_BLOODYGOODTIME=4 /D SE_EYE=5 /D SE_ORANGEBOXVALVE=6 /D SE_LEFT4DEAD=7 /D SE_LEFT4DEAD2=8 /D SE_ALIENSWARM=9 /D SE_PORTAL2=10 /D SE_CSGO=11"
+				AdditionalOptions="/D SE_EPISODEONE=1 /D SE_DARKMESSIAH=2 /D SE_ORANGEBOX=3 /D SE_BLOODYGOODTIME=4 /D SE_EYE=5 /D SE_ORANGEBOXVALVE=6 /D SE_LEFT4DEAD=7 /D SE_LEFT4DEAD2=8 /D SE_ALIENSWARM=9 /D SE_PORTAL2=10 /D SE_CSGO=11 /D COMPILER_MSVC /D COMPILER_MSVC32"
 				FavorSizeOrSpeed="1"
 				AdditionalIncludeDirectories="..;..\sdk;..\..\..\public;..\..\..\public\sourcepawn;..\..\..\public\extensions;&quot;$(HL2SDK-CSGO)\public&quot;;&quot;$(HL2SDK-CSGO)\public\game\server&quot;;&quot;$(HL2SDK-CSGO)\public\engine&quot;;&quot;$(HL2SDK-CSGO)\public\tier0&quot;;&quot;$(HL2SDK-CSGO)\public\tier1&quot;;&quot;$(MMSOURCE18)\core&quot;;&quot;$(MMSOURCE18)\core\sourcehook&quot;"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;CSTRIKE_EXPORTS;_CRT_SECURE_NO_DEPRECATE;SOURCEMOD_BUILD;SOURCE_ENGINE=11"