diff --git a/moo/moocpp/gobjectptr.h b/moo/moocpp/gobjectptr.h
index 0cfd93f6..e7b602ad 100644
--- a/moo/moocpp/gobjectptr.h
+++ b/moo/moocpp/gobjectptr.h
@@ -51,7 +51,7 @@ public:
         auto* tmp = m_obj;
         m_obj = nullptr;
         if (tmp)
-            ObjRefUnrefHelper::unref(m_obj);
+            ObjRefUnrefHelper::unref(tmp);
     }
 
     ObjClass* get() const { return m_obj; }