diff --git a/src/MainWindowMDI.cpp b/src/MainWindowMDI.cpp
index 5fb427eb..54ccf462 100644
--- a/src/MainWindowMDI.cpp
+++ b/src/MainWindowMDI.cpp
@@ -14,7 +14,7 @@
 
 using namespace KDDockWidgets;
 
-MainWindowMDI::MainWindowMDI(const QString &uniqueName, QQuickItem *parent, Qt::WindowFlags flags)
+MainWindowMDI::MainWindowMDI(const QString &uniqueName, WidgetType *parent, Qt::WindowFlags flags)
     : MDIMainWindowBase(uniqueName, MainWindowOption_MDI, parent, flags)
 {
 }
diff --git a/src/MainWindowMDI.h b/src/MainWindowMDI.h
index e1bbd8f2..08a529ba 100644
--- a/src/MainWindowMDI.h
+++ b/src/MainWindowMDI.h
@@ -34,7 +34,7 @@ class DOCKS_EXPORT MainWindowMDI : public KDDockWidgets::MDIMainWindowBase
 public:
 
     ///@brief Constructor. See base class documentation
-    explicit MainWindowMDI(const QString &uniqueName, QQuickItem *parent = nullptr,
+    explicit MainWindowMDI(const QString &uniqueName, WidgetType *parent = nullptr,
                            Qt::WindowFlags flags = Qt::WindowFlags());
 
     ///@brief Destructor