--- a/src/HOL/ex/MergeSort.thy Wed Dec 29 13:51:17 2010 +0100
+++ b/src/HOL/ex/MergeSort.thy Wed Dec 29 17:34:41 2010 +0100
@@ -6,7 +6,7 @@
header{*Merge Sort*}
theory MergeSort
-imports Multiset
+imports "~~/src/HOL/Library/Multiset"
begin
context linorder