--- ./xutils.c.00	2002-05-23 22:04:48.000000000 +0200
+++ ./xutils.c	2008-09-22 19:45:35.000000000 +0200
@@ -233,7 +233,7 @@
      */
     XSetWMNormalHints(display, win, &mysizehints);
     classHint.res_name = wname;
-    classHint.res_class = wname;
+    classHint.res_class = "DockApp";
     XSetClassHint(display, win, &classHint);