diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index 1cc71b4e1e..f65437fd43 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -1835,7 +1835,8 @@ static const char * xcb_atomnames = {
     "_XSETTINGS_SETTINGS\0"
     "_COMPIZ_DECOR_PENDING\0"
     "_COMPIZ_DECOR_REQUEST\0"
-    "_COMPIZ_DECOR_DELETE_PIXMAP\0" // \0\0 terminates loop.
+    "_COMPIZ_DECOR_DELETE_PIXMAP\0"
+    "_COMPIZ_TOOLKIT_ACTION\0" // \0\0 terminates loop.
 };
 
 QXcbAtom::Atom QXcbConnection::qatom(xcb_atom_t xatom) const
diff --git a/src/plugins/platforms/xcb/qxcbconnection.h b/src/plugins/platforms/xcb/qxcbconnection.h
index 2e5a2d7788..6ee32bf600 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.h
+++ b/src/plugins/platforms/xcb/qxcbconnection.h
@@ -286,6 +286,7 @@ namespace QXcbAtom {
         _COMPIZ_DECOR_PENDING,
         _COMPIZ_DECOR_REQUEST,
         _COMPIZ_DECOR_DELETE_PIXMAP,
+        _COMPIZ_TOOLKIT_ACTION,
 
         NPredefinedAtoms,
 
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 1ff052f2c0..d751c6d48a 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -1971,7 +1971,8 @@ void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *even
         // and other messages.
     } else if (event->type == atom(QXcbAtom::_COMPIZ_DECOR_PENDING)
             || event->type == atom(QXcbAtom::_COMPIZ_DECOR_REQUEST)
-            || event->type == atom(QXcbAtom::_COMPIZ_DECOR_DELETE_PIXMAP)) {
+            || event->type == atom(QXcbAtom::_COMPIZ_DECOR_DELETE_PIXMAP)
+            || event->type == atom(QXcbAtom::_COMPIZ_TOOLKIT_ACTION)) {
         //silence the _COMPIZ messages for now
     } else {
         qWarning() << "QXcbWindow: Unhandled client message:" << connection()->atomName(event->type);