diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/UNITY/Comp/Counterc.thy
--- a/src/HOL/UNITY/Comp/Counterc.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/UNITY/Comp/Counterc.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -11,7 +11,7 @@
    Spriner LNCS 1586 (1999), pages 1215-1227.
 *)
 
-header{*A Family of Similar Counters: Version with Compatibility*}
+section{*A Family of Similar Counters: Version with Compatibility*}
 
 theory Counterc imports "../UNITY_Main" begin