--- a/src/HOL/Library/BigO.thy Mon Dec 10 11:24:03 2007 +0100
+++ b/src/HOL/Library/BigO.thy Mon Dec 10 11:24:06 2007 +0100
@@ -6,7 +6,7 @@
header {* Big O notation *}
theory BigO
-imports SetsAndFunctions
+imports Main SetsAndFunctions
begin
text {*