diff --git a/extensions/sdktools/Makefile.ep1 b/extensions/sdktools/Makefile.ep1
index 76ba1b15..28a16db1 100644
--- a/extensions/sdktools/Makefile.ep1
+++ b/extensions/sdktools/Makefile.ep1
@@ -40,7 +40,7 @@ INCLUDE = -I. -I.. -Isdk -I$(HL2PUB) -I$(HL2PUB)/dlls -I$(HL2PUB)/engine -I$(HL2
 CFLAGS = -D_LINUX -DNDEBUG -Dstricmp=strcasecmp -D_stricmp=strcasecmp -D_strnicmp=strncasecmp -Dstrnicmp=strncasecmp \
 	-D_snprintf=snprintf -D_vsnprintf=vsnprintf -D_alloca=alloca -Dstrcmpi=strcasecmp -Wall -Werror -Wno-switch \
 	-Wno-unused -fPIC -mfpmath=sse -msse -DSOURCEMOD_BUILD -DHAVE_STDINT_H
-CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti
+CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti -fno-threadsafe-statics 
 
 ################################################
 ### DO NOT EDIT BELOW HERE FOR MOST PROJECTS ###
diff --git a/extensions/sdktools/Makefile.ep2 b/extensions/sdktools/Makefile.ep2
index 0ba6d7d5..19875fd8 100644
--- a/extensions/sdktools/Makefile.ep2
+++ b/extensions/sdktools/Makefile.ep2
@@ -40,7 +40,7 @@ INCLUDE = -I. -I.. -Isdk -I$(HL2PUB) -I$(HL2PUB)/dlls -I$(HL2PUB)/engine -I$(HL2
 CFLAGS = -D_LINUX -DNDEBUG -Dstricmp=strcasecmp -D_stricmp=strcasecmp -D_strnicmp=strncasecmp -Dstrnicmp=strncasecmp \
 	-D_snprintf=snprintf -D_vsnprintf=vsnprintf -D_alloca=alloca -Dstrcmpi=strcasecmp -Wall -Werror -Wno-switch \
 	-Wno-unused -fPIC -mfpmath=sse -msse -DSOURCEMOD_BUILD -DHAVE_STDINT_H -DORANGEBOX_BUILD
-CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti
+CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti -fno-threadsafe-statics 
 
 ################################################
 ### DO NOT EDIT BELOW HERE FOR MOST PROJECTS ###
diff --git a/extensions/sdktools/Makefile.orig b/extensions/sdktools/Makefile.orig
index 35d07e58..a509365a 100644
--- a/extensions/sdktools/Makefile.orig
+++ b/extensions/sdktools/Makefile.orig
@@ -40,7 +40,7 @@ INCLUDE = -I. -I.. -Isdk -I$(HL2PUB) -I$(HL2PUB)/dlls -I$(HL2PUB)/engine -I$(HL2
 CFLAGS = -D_LINUX -DNDEBUG -Dstricmp=strcasecmp -D_stricmp=strcasecmp -D_strnicmp=strncasecmp -Dstrnicmp=strncasecmp \
 	-D_snprintf=snprintf -D_vsnprintf=vsnprintf -D_alloca=alloca -Dstrcmpi=strcasecmp -Wall -Werror -Wno-switch \
 	-Wno-unused -fPIC -mfpmath=sse -msse -DSOURCEMOD_BUILD -DHAVE_STDINT_H
-CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti
+CPPFLAGS = -Wno-non-virtual-dtor -fno-exceptions -fno-rtti -fno-threadsafe-statics 
 
 ################################################
 ### DO NOT EDIT BELOW HERE FOR MOST PROJECTS ###