diff --git a/Utilities/SMutex.h b/Utilities/SMutex.h
index beeb5a8920..c67578d7b2 100644
--- a/Utilities/SMutex.h
+++ b/Utilities/SMutex.h
@@ -49,6 +49,11 @@ public:
 		owner = GetFreeValue();
 	}
 
+	SMutexBase()
+	{
+		initialize();
+	}
+
 	void finalize()
 	{
 		owner = GetDeadValue();