diff --git a/event.c b/event.c
index 370d9ae0..38e61a16 100644
--- a/event.c
+++ b/event.c
@@ -665,10 +665,23 @@ event_handle_unmapnotify(void *data __attribute__ ((unused)),
 
     if((c = client_getbywin(ev->window)))
     {
-        if(ev->event == xutil_screen_get(connection, c->phys_screen)->root
-           && XCB_EVENT_SENT(ev)
-           && xwindow_get_state_reply(xwindow_get_state_unchecked(c->window)) == XCB_WM_STATE_NORMAL)
-            client_unmanage(c);
+        if(ev->event == xutil_screen_get(connection, c->phys_screen)->root)
+        {
+            if(!XCB_EVENT_SENT(ev))
+            {
+                /* A regular UnmapNotify, remove that client from our lists */
+                client_unmanage(c);
+            }
+            else
+            {
+                /* According to ICCCM 4.1.4 a client sends a synthetic
+                 * UnmapNotify when it wants to switch to Widthdrawn state.
+                 * We handle these by unmapping the client and waiting for the
+                 * "real" UnmapNotify.
+                 */
+                xcb_unmap_window(connection, ev->window);
+            }
+        }
     }
     else
         for(int i = 0; i < globalconf.embedded.len; i++)