--- a/src/HOL/Auth/Guard/Yahalom.thy Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/Auth/Guard/Yahalom.thy Fri Jun 17 16:12:49 2005 +0200
@@ -11,7 +11,7 @@
header{*Yahalom Protocol*}
-theory Yahalom = Guard_Shared:
+theory Yahalom imports Guard_Shared begin
subsection{*messages used in the protocol*}