diff -r 677ea6c8169a -r 4cd528a30ec1 lemon/grid_ugraph.h
--- a/lemon/grid_ugraph.h	Wed Jun 28 16:27:44 2006 +0000
+++ b/lemon/grid_ugraph.h	Fri Jun 30 12:14:36 2006 +0000
@@ -24,7 +24,7 @@
 #include <lemon/bits/utility.h>
 
 #include <lemon/bits/base_extender.h>
-#include <lemon/bits/graph_extender.h>
+#include <lemon/bits/ugraph_extender.h>
 
 #include <lemon/xy.h>