diff -r 6061ae1f90f2 -r 9bc16273c2d4 src/HOL/UNITY/Comp/Counterc.thy
--- a/src/HOL/UNITY/Comp/Counterc.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/UNITY/Comp/Counterc.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -13,7 +13,7 @@
 
 header{*A Family of Similar Counters: Version with Compatibility*}
 
-theory Counterc =  UNITY_Main:
+theory Counterc imports  UNITY_Main begin
 
 typedecl state
 arities state :: type