diff -r 827cac8abecc -r 026e7c6a6d08 src/HOL/Finite_Set.thy
--- a/src/HOL/Finite_Set.thy	Mon Sep 21 16:11:36 2009 +0200
+++ b/src/HOL/Finite_Set.thy	Tue Sep 22 15:36:55 2009 +0200
@@ -2966,11 +2966,11 @@
 
 lemma dual_max:
   "ord.max (op \<ge>) = min"
-  by (auto simp add: ord.max_def_raw expand_fun_eq)
+  by (auto simp add: ord.max_def_raw min_def expand_fun_eq)
 
 lemma dual_min:
   "ord.min (op \<ge>) = max"
-  by (auto simp add: ord.min_def_raw expand_fun_eq)
+  by (auto simp add: ord.min_def_raw max_def expand_fun_eq)
 
 lemma strict_below_fold1_iff:
   assumes "finite A" and "A \<noteq> {}"