diff -r 47fdd4f40d00 -r 8a6cac7c7247 src/HOL/MicroJava/J/SystemClasses.thy
--- a/src/HOL/MicroJava/J/SystemClasses.thy	Sun Nov 02 17:39:52 2014 +0100
+++ b/src/HOL/MicroJava/J/SystemClasses.thy	Sun Nov 02 17:58:35 2014 +0100
@@ -3,7 +3,7 @@
     Copyright   2002 Technische Universitaet Muenchen
 *)
 
-header {* \isaheader{System Classes} *}
+section {* System Classes *}
 
 theory SystemClasses imports Decl begin