diff --git a/examples/corelib/serialization/convert/converter.h b/examples/corelib/serialization/convert/converter.h
index 8cbf3f4f4f7..13e1ec29d57 100644
--- a/examples/corelib/serialization/convert/converter.h
+++ b/examples/corelib/serialization/convert/converter.h
@@ -21,8 +21,6 @@ public:
             append({it.key(), it.value()});
     }
 };
-using Map = VariantOrderedMap;
-Q_DECLARE_METATYPE(Map)
 
 class Converter
 {