--- a/src/HOL/HOLCF/Powerdomains.thy	Sun Nov 02 17:14:15 2014 +0100
+++ b/src/HOL/HOLCF/Powerdomains.thy	Sun Nov 02 17:16:01 2014 +0100
@@ -2,7 +2,7 @@
     Author:     Brian Huffman
 *)
 
-header {* Powerdomains *}
+section {* Powerdomains *}
 
 theory Powerdomains
 imports ConvexPD Domain