--- a/src/HOL/Extraction.thy Thu Aug 09 15:52:38 2007 +0200
+++ b/src/HOL/Extraction.thy Thu Aug 09 15:52:42 2007 +0200
@@ -6,7 +6,7 @@
header {* Program extraction for HOL *}
theory Extraction
-imports Datatype Option
+imports Datatype
uses "Tools/rewrite_hol_proof.ML"
begin