diff --git a/src/DynamicQObject.h b/src/DynamicQObject.h
index 63be15e..d646c79 100644
--- a/src/DynamicQObject.h
+++ b/src/DynamicQObject.h
@@ -93,7 +93,7 @@ DynamicQObject<T>::DynamicQObject()
 }
 
 template <typename T>
-void DynamicQObject<T>::setOnSlotExecutedHandler(const DynamicQObject::OnSlotExecutedHandler &handler)
+void DynamicQObject<T>::setOnSlotExecutedHandler(const typename DynamicQObject::OnSlotExecutedHandler &handler)
 {
     m_onSlotExecutedHandler = handler;
 }