diff --git a/reaction/code/qcommon/q_shared.h b/reaction/code/qcommon/q_shared.h
index be9d4ed9..ee79c26e 100644
--- a/reaction/code/qcommon/q_shared.h
+++ b/reaction/code/qcommon/q_shared.h
@@ -54,7 +54,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #define BASETA				"missionpack"
 
-#ifdef _MSC_VER
+#ifndef PRODUCT_VERSION
   #define PRODUCT_VERSION "1.36"
 #endif