diff --git a/api/graphics_api.C b/api/graphics_api.C
index afbeb2d74e..b584b11681 100755
--- a/api/graphics_api.C
+++ b/api/graphics_api.C
@@ -45,8 +45,10 @@ HANDLE graphics_threadh=NULL;
 #include "mac_app_opengl.h"
 #endif
 
-
+#ifdef _WIN32
 HANDLE hQuitEvent;
+#endif
+
 GRAPHICS_INFO gi;
 bool graphics_inited = false;