diff --git a/shell/primaryoutputwatcher.cpp b/shell/primaryoutputwatcher.cpp
index 0b13e2575..993069252 100644
--- a/shell/primaryoutputwatcher.cpp
+++ b/shell/primaryoutputwatcher.cpp
@@ -108,7 +108,11 @@ void PrimaryOutputWatcher::setupRegistry()
     m_registry->setup();
 }
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 bool PrimaryOutputWatcher::nativeEventFilter(const QByteArray &eventType, void *message, long int *result)
+#else
+bool PrimaryOutputWatcher::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result)
+#endif
 {
     Q_UNUSED(result);
 #if HAVE_X11
diff --git a/shell/primaryoutputwatcher.h b/shell/primaryoutputwatcher.h
index bbfffce57..29cf1ecfd 100644
--- a/shell/primaryoutputwatcher.h
+++ b/shell/primaryoutputwatcher.h
@@ -38,7 +38,11 @@ protected:
 
 private:
     void setupRegistry();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override;
+#else
+    bool nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result) override;
+#endif
 
     // All
     QString m_primaryOutputName;
diff --git a/xembed-sni-proxy/fdoselectionmanager.cpp b/xembed-sni-proxy/fdoselectionmanager.cpp
index 495b88014..14c89b397 100644
--- a/xembed-sni-proxy/fdoselectionmanager.cpp
+++ b/xembed-sni-proxy/fdoselectionmanager.cpp
@@ -100,7 +100,11 @@ bool FdoSelectionManager::addDamageWatch(xcb_window_t client)
     return true;
 }
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 bool FdoSelectionManager::nativeEventFilter(const QByteArray &eventType, void *message, long int *result)
+#else
+bool FdoSelectionManager::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result)
+#endif
 {
     Q_UNUSED(result)
 
diff --git a/xembed-sni-proxy/fdoselectionmanager.h b/xembed-sni-proxy/fdoselectionmanager.h
index 16695e2d3..2f3d8bc4c 100644
--- a/xembed-sni-proxy/fdoselectionmanager.h
+++ b/xembed-sni-proxy/fdoselectionmanager.h
@@ -25,7 +25,11 @@ public:
     ~FdoSelectionManager() override;
 
 protected:
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override;
+#else
+    bool nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result) override;
+#endif
 
 private Q_SLOTS:
     void onClaimedOwnership();