diff -r 6061ae1f90f2 -r 9bc16273c2d4 src/HOL/ex/Tarski.thy
--- a/src/HOL/ex/Tarski.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/ex/Tarski.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -5,7 +5,7 @@
 
 header {* The Full Theorem of Tarski *}
 
-theory Tarski = Main + FuncSet:
+theory Tarski imports Main FuncSet begin
 
 text {*
   Minimal version of lattice theory plus the full theorem of Tarski: