--- ./ui_x.c.00	2004-05-13 02:30:28.000000000 +0200
+++ ./ui_x.c	2007-02-19 21:28:44.000000000 +0100
@@ -261,7 +261,7 @@
 
     XSetWMNormalHints(display, win, &sizehints);
     classhint.res_name = name;
-    classhint.res_class = name;
+    classhint.res_class = "DockApp";
     XSetClassHint(display, win, &classhint);
 
 #define INPUT_MASK \