diff --git a/tabbox.cpp b/tabbox.cpp
index 93a5258197..22a79e9213 100644
--- a/tabbox.cpp
+++ b/tabbox.cpp
@@ -1360,6 +1360,11 @@ void Workspace::setTabBoxDesktop( int iDesktop )
 
 bool Workspace::establishTabBoxGrab()
     {
+    // The KDED Global Shortcuts Server will have used XGrabKey and
+    // XUngrabKeyboard as part of handling the shortcut for activating the
+    // tabbox.  Make sure to update our current X time, or else it will be
+    // older than the Server's grab/ungrab.
+    updateXTime();
     if( !grabXKeyboard())
         return false;
     // Don't try to establish a global mouse grab using XGrabPointer, as that would prevent