diff --git a/src/controller.cpp b/src/controller.cpp
index a757ee78e..b6f78708c 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -338,11 +338,6 @@ void Controller::setActiveConnection(NeoChatConnection *connection)
     Q_EMIT activeConnectionChanged();
 }
 
-void Controller::saveWindowGeometry()
-{
-    WindowController::instance().saveGeometry();
-}
-
 void Controller::forceRefreshTextDocument(QQuickTextDocument *textDocument, QQuickItem *item)
 {
     // HACK: Workaround bug QTBUG 93281
diff --git a/src/controller.h b/src/controller.h
index 1082b5abe..dc3500fa8 100644
--- a/src/controller.h
+++ b/src/controller.h
@@ -136,7 +136,4 @@ Q_SIGNALS:
     void activeConnectionChanged();
     void userConsentRequired(QUrl url);
     void accountsLoadingChanged();
-
-public Q_SLOTS:
-    void saveWindowGeometry();
 };
diff --git a/src/qml/main.qml b/src/qml/main.qml
index d820a4274..577e69089 100644
--- a/src/qml/main.qml
+++ b/src/qml/main.qml
@@ -86,7 +86,7 @@ Kirigami.ApplicationWindow {
     Timer {
         id: saveWindowGeometryTimer
         interval: 1000
-        onTriggered: Controller.saveWindowGeometry()
+        onTriggered: WindowController.saveGeometry()
     }
 
     Connections {
@@ -94,7 +94,7 @@ Kirigami.ApplicationWindow {
         enabled: false // Disable on startup to avoid writing wrong values if the window is hidden
         target: root
 
-        function onClosing() { Controller.saveWindowGeometry(); }
+        function onClosing() { WindowController.saveGeometry(); }
         function onWidthChanged() { saveWindowGeometryTimer.restart(); }
         function onHeightChanged() { saveWindowGeometryTimer.restart(); }
         function onXChanged() { saveWindowGeometryTimer.restart(); }
diff --git a/src/windowcontroller.h b/src/windowcontroller.h
index 564af930b..237104aa2 100644
--- a/src/windowcontroller.h
+++ b/src/windowcontroller.h
@@ -52,7 +52,7 @@ public:
     /**
      * @brief Save the current window geometry.
      */
-    void saveGeometry();
+    Q_INVOKABLE void saveGeometry();
 
     /**
      * @brief Show the window and raise to the top.