src/HOL/Library/Permutation.thy

--- a/src/HOL/Library/Permutation.thy	Fri Mar 27 10:05:08 2009 +0100
+++ b/src/HOL/Library/Permutation.thy	Fri Mar 27 10:05:11 2009 +0100
@@ -5,7 +5,7 @@
 header {* Permutations *}
 
 theory Permutation
-imports Plain Multiset
+imports Main Multiset
 begin
 
 inductive