diff --git a/src/corelib/plugin/qfactoryloader.cpp b/src/corelib/plugin/qfactoryloader.cpp
index ce988fa2ff9..2d31e1da7ee 100644
--- a/src/corelib/plugin/qfactoryloader.cpp
+++ b/src/corelib/plugin/qfactoryloader.cpp
@@ -244,7 +244,7 @@ QStringList QFactoryLoader::keys() const
             QObject *instance = staticPlugins.at(i).instance();
             QFactoryInterface *factory = qobject_cast<QFactoryInterface*>(instance);
             if (instance && factory && instance->qt_metacast(d->iid))
-                keys = factory->keys();
+                keys += factory->keys();
         }
     }
     return keys;