diff --git a/src/plugins/qmldesigner/designercore/include/metainfo.h b/src/plugins/qmldesigner/designercore/include/metainfo.h
index 8b06431b3ad..b2eb27cb2fa 100644
--- a/src/plugins/qmldesigner/designercore/include/metainfo.h
+++ b/src/plugins/qmldesigner/designercore/include/metainfo.h
@@ -61,7 +61,7 @@ class QMLDESIGNERCORE_EXPORT MetaInfo
     friend class QmlDesigner::Internal::ModelPrivate;
     friend class QmlDesigner::Internal::MetaInfoReader;
     friend class QmlDesigner::Internal::SubComponentManagerPrivate;
-    friend bool operator==(const MetaInfo &, const MetaInfo &);
+    friend QMLDESIGNERCORE_EXPORT bool operator==(const MetaInfo &, const MetaInfo &);
 
 public:
     MetaInfo(const MetaInfo &metaInfo);