--- a/src/HOL/IMP/Compiler0.thy Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/IMP/Compiler0.thy Fri Jun 17 16:12:49 2005 +0200
@@ -10,7 +10,7 @@
header "A Simple Compiler"
-theory Compiler0 = Natural:
+theory Compiler0 imports Natural begin
subsection "An abstract, simplistic machine"