1 files changed, 4 insertions, 0 deletions
diff --git a/src/widgets/widgets/qmenubar.cpp b/src/widgets/widgets/qmenubar.cpp
index ce43740524..6b0c2fd621 100644
--- a/src/widgets/widgets/qmenubar.cpp
+++ b/src/widgets/widgets/qmenubar.cpp
@@ -1192,6 +1192,10 @@ QPlatformMenu *QMenuBarPrivate::getPlatformMenu(QAction *action)
     QPlatformMenu *platformMenu = action->menu()->platformMenu();
     if (!platformMenu && platformMenuBar) {
         platformMenu = platformMenuBar->createMenu();
+        // QPlatformMenuBar::createMenu() was introduced in Qt 5.7. Not all third party
+        // platform themes are using it, so fallback to QPlatformTheme::createPlatformMenu().
+        if (!platformMenu)
+            platformMenu = QGuiApplicationPrivate::platformTheme()->createPlatformMenu();
         if (platformMenu)
             action->menu()->setPlatformMenu(platformMenu);
     }