diff --git a/src/widgets/private/startupnotifications/startupnotificationmonitor.cpp b/src/widgets/private/startupnotifications/startupnotificationmonitor.cpp
index 241b8966c..36c421d43 100644
--- a/src/widgets/private/startupnotifications/startupnotificationmonitor.cpp
+++ b/src/widgets/private/startupnotifications/startupnotificationmonitor.cpp
@@ -79,9 +79,15 @@ StartupNotificationMonitor::StartupNotificationMonitor() :
     int screen = 0;
 
     xcb_screen_t *s = xcb_aux_get_screen (QX11Info::connection(), screen);
-    const uint32_t select_input_val[] = { XCB_EVENT_MASK_PROPERTY_CHANGE };
-    xcb_change_window_attributes (QX11Info::connection(), s->root, XCB_CW_EVENT_MASK,
-                                  select_input_val);
+    xcb_get_window_attributes_cookie_t attr_cookie = xcb_get_window_attributes(QX11Info::connection(),s->root);
+    xcb_get_window_attributes_reply_t *attr_reply = xcb_get_window_attributes_reply(QX11Info::connection(),attr_cookie,NULL);
+    uint32_t old_event_mask = attr_reply->your_event_mask;
+
+    if(!(old_event_mask & XCB_EVENT_MASK_PROPERTY_CHANGE)) {
+        const uint32_t select_input_val[] = { XCB_EVENT_MASK_PROPERTY_CHANGE | old_event_mask};
+        xcb_change_window_attributes (QX11Info::connection(), s->root, XCB_CW_EVENT_MASK,
+                                      select_input_val);
+    }
 
     display = sn_xcb_display_new (QX11Info::connection(), NULL, NULL);