diff --git a/src/common/QskMetaFunction.h b/src/common/QskMetaFunction.h
index 337d5b5a..b77d4173 100644
--- a/src/common/QskMetaFunction.h
+++ b/src/common/QskMetaFunction.h
@@ -19,6 +19,10 @@ namespace QskMetaFunctionTraits
     using IsMemberFunction = typename std::enable_if<
         FunctionPointer< T >::IsPointerToMemberFunction, std::true_type >::type;
 
+    template< typename T >
+    using IsFunctorOrStaticFunction = typename std::enable_if<
+        !FunctionPointer< T >::IsPointerToMemberFunction, std::true_type >::type;
+
     template< typename T >
     using IsFunctor = typename std::enable_if<
         !FunctionPointer< T >::IsPointerToMemberFunction