diff -r dc6be28d7f4e -r c69542757a4d src/HOL/Library/Permutation.thy
--- a/src/HOL/Library/Permutation.thy	Mon Aug 16 14:21:54 2004 +0200
+++ b/src/HOL/Library/Permutation.thy	Mon Aug 16 14:22:27 2004 +0200
@@ -4,7 +4,9 @@
 
 header {* Permutations *}
 
-theory Permutation = Multiset:
+theory Permutation
+import Multiset
+begin
 
 consts
   perm :: "('a list * 'a list) set"