diff --git a/project/clbuild.sh b/project/clbuild.sh
index 8a36685..d11c98a 100755
--- a/project/clbuild.sh
+++ b/project/clbuild.sh
@@ -91,7 +91,7 @@ make shared-objs static-objs app-objs                           \
 		-e 's@'"$mb_cc -c "'@cl /nologo -c @'           \
 		-e 's@ '"$mb_source_dir"'@ %source_dir%@'       \
 		-e 's@-I'"$mb_source_dir"'@-I%source_dir%@g'    \
-		-e 's@-ffreestanding@/X@g'                      \
+		-e 's@-ffreestanding@/X /GS-@g'                 \
 		-e 's@-o @/Fo:@g'                               \
 		-e 's@-std=c99 @@g'                             \
 		-e 's@-fPIC@@g'                                 \