diff -r eb4ad6f28c7d -r 76b7b4575e21 core/GameDataFetcher.cpp
--- a/core/GameDataFetcher.cpp	Fri Nov 14 03:38:59 2008 -0600
+++ b/core/GameDataFetcher.cpp	Fri Nov 14 09:18:30 2008 -0600
@@ -50,7 +50,9 @@
 #include "sh_string.h"
 #include "sm_version.h"
 
-#ifdef ORANGEBOX_BUILD
+#if SOURCE_ENGINE == SE_LEFT4DEAD
+#include "convar_sm_l4d.h"
+#elif SOURCE_ENGINE == SE_ORANGEBOX
 #include "convar_sm_ob.h"
 #else
 #include "convar_sm.h"
@@ -724,7 +726,7 @@
 
 CON_COMMAND(sm_gamedata_md5, "Checks the MD5 sum for a given gamedata file")
 {
-#if !defined ORANGEBOX_BUILD
+#if SOURCE_ENGINE == SE_EPISODEONE
 	CCommand args;
 #endif