diff --git a/src/quick/designer/designersupport.cpp b/src/quick/designer/designersupport.cpp
index 55a0b53df7fb7bc7d990cad27debf8aff37b9b79..1b0fea91909084fdff4f590cc231f9319c7744a9 100644
--- a/src/quick/designer/designersupport.cpp
+++ b/src/quick/designer/designersupport.cpp
@@ -434,4 +434,9 @@ void DesignerSupport::createOpenGLContext(QQuickWindow *window)
     DesignerWindowManager::createOpenGLContext(window);
 }
 
+void DesignerSupport::polishItems(QQuickWindow *window)
+{
+    QQuickWindowPrivate::get(window)->polishItems();
+}
+
 QT_END_NAMESPACE
diff --git a/src/quick/designer/designersupport.h b/src/quick/designer/designersupport.h
index e27cb3bcb3d2fbfccbe8bfe105c5eeaf49be19d4..723e1067d884da59b8a0f4501b29d3073ae58876 100644
--- a/src/quick/designer/designersupport.h
+++ b/src/quick/designer/designersupport.h
@@ -148,6 +148,8 @@ public:
 
     static void createOpenGLContext(QQuickWindow *window);
 
+    static void polishItems(QQuickWindow *window);
+
 private:
     QHash<QQuickItem*, QQuickShaderEffectTexture*> m_itemTextureHash;
 };