diff --git a/src/plugins/qmldesigner/documentmanager.cpp b/src/plugins/qmldesigner/documentmanager.cpp
index 8572420c92b..725b53cbd75 100644
--- a/src/plugins/qmldesigner/documentmanager.cpp
+++ b/src/plugins/qmldesigner/documentmanager.cpp
@@ -299,7 +299,7 @@ bool DocumentManager::hasCurrentDesignDocument() const
     return m_currentDesignDocument.data();
 }
 
-void DocumentManager::removeEditors(QList<Core::IEditor *> editors)
+void DocumentManager::removeEditors(const QList<Core::IEditor *> &editors)
 {
     foreach (Core::IEditor *editor, editors)
         delete m_designDocumentHash.take(editor).data();
diff --git a/src/plugins/qmldesigner/documentmanager.h b/src/plugins/qmldesigner/documentmanager.h
index 83d773d75f3..7e4da751879 100644
--- a/src/plugins/qmldesigner/documentmanager.h
+++ b/src/plugins/qmldesigner/documentmanager.h
@@ -49,7 +49,7 @@ public:
     DesignDocument *currentDesignDocument() const;
     bool hasCurrentDesignDocument() const;
 
-    void removeEditors(QList<Core::IEditor*> editors);
+    void removeEditors(const QList<Core::IEditor *> &editors);
 
     static void goIntoComponent(const ModelNode &modelNode);