diff --git a/sys/ximage/ximagesink.c b/sys/ximage/ximagesink.c
index 984dc4e04a..3f1714c663 100644
--- a/sys/ximage/ximagesink.c
+++ b/sys/ximage/ximagesink.c
@@ -831,8 +831,10 @@ gst_ximagesink_xwindow_set_title (GstXImageSink * ximagesink,
 
       if (title) {
         if ((XStringListToTextProperty (((char **) &title), 1,
-                    &xproperty)) != 0)
+                    &xproperty)) != 0) {
           XSetWMName (ximagesink->xcontext->disp, xwindow->win, &xproperty);
+          XFree (xproperty.value);
+        }
 
         g_free (title_mem);
       }