diff -r c61507a98bff -r c8a6ce181805 src/HOL/Library/BigO.thy
--- a/src/HOL/Library/BigO.thy	Fri Jul 04 16:33:08 2008 +0200
+++ b/src/HOL/Library/BigO.thy	Mon Jul 07 08:47:17 2008 +0200
@@ -6,7 +6,7 @@
 header {* Big O notation *}
 
 theory BigO
-imports Plain Presburger SetsAndFunctions
+imports Plain "~~/src/HOL/Presburger" SetsAndFunctions
 begin
 
 text {*