diff -r 0baae4311a9f -r b9556a055632 src/HOL/Library/Monad_Syntax.thy
--- a/src/HOL/Library/Monad_Syntax.thy	Sun Nov 02 17:16:01 2014 +0100
+++ b/src/HOL/Library/Monad_Syntax.thy	Sun Nov 02 17:20:45 2014 +0100
@@ -2,7 +2,7 @@
    Author: Christian Sternagel, University of Innsbruck
 *)
 
-header {* Monad notation for arbitrary types *}
+section {* Monad notation for arbitrary types *}
 
 theory Monad_Syntax
 imports Main "~~/src/Tools/Adhoc_Overloading"