--- ./wmcube.c.00	2006-12-28 22:00:03.000000000 +0100
+++ ./wmcube.c	2007-02-21 19:21:10.000000000 +0100
@@ -240,7 +240,7 @@
     attr.visual = gdk_visual_get_system();
     attr.colormap = gdk_colormap_get_system();
     attr.wmclass_name = "wmcube";
-    attr.wmclass_class = "wmcube";
+    attr.wmclass_class = "DockApp";
     attr.window_type = GDK_WINDOW_TOPLEVEL;
 
     sizehints.flags = USSize;