diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
index f21e683c00f..ee618c5745f 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
@@ -184,6 +184,9 @@ QCocoaIntegration::~QCocoaIntegration()
         [[NSApplication sharedApplication] setDelegate:nil];
     }
 
+    // Stop global mouse event and app activation monitoring
+    QCocoaWindow::removePopupMonitor();
+
 #ifndef QT_NO_CLIPBOARD
     // Delete the clipboard integration and destroy mime type converters.
     // Deleting the clipboard integration flushes promised pastes using