diff --git a/src/modules/graphics/opengl/FenceSync.h b/src/modules/graphics/opengl/FenceSync.h
index ae5bab78e..7e3de34ef 100644
--- a/src/modules/graphics/opengl/FenceSync.h
+++ b/src/modules/graphics/opengl/FenceSync.h
@@ -38,7 +38,7 @@ class FenceSync
 {
 public:
 
-	FenceSync() {}
+	FenceSync() : sync(0) {}
 	~FenceSync();
 
 	bool fence();