diff -r 143c85e3cdb5 -r 0baae4311a9f src/HOL/HOLCF/Fix.thy
--- a/src/HOL/HOLCF/Fix.thy	Sun Nov 02 17:14:15 2014 +0100
+++ b/src/HOL/HOLCF/Fix.thy	Sun Nov 02 17:16:01 2014 +0100
@@ -3,7 +3,7 @@
     Author:     Brian Huffman
 *)
 
-header {* Fixed point operator and admissibility *}
+section {* Fixed point operator and admissibility *}
 
 theory Fix
 imports Cfun