diff -r 6061ae1f90f2 -r 9bc16273c2d4 src/HOL/Isar_examples/ExprCompiler.thy
--- a/src/HOL/Isar_examples/ExprCompiler.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/Isar_examples/ExprCompiler.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -7,7 +7,7 @@
 
 header {* Correctness of a simple expression compiler *}
 
-theory ExprCompiler = Main:
+theory ExprCompiler imports Main begin
 
 text {*
  This is a (rather trivial) example of program verification.  We model