diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/Old_Number_Theory/Int2.thy
--- a/src/HOL/Old_Number_Theory/Int2.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Old_Number_Theory/Int2.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -2,7 +2,7 @@
     Authors:    Jeremy Avigad, David Gray, and Adam Kramer
 *)
 
-header {*Integers: Divisibility and Congruences*}
+section {*Integers: Divisibility and Congruences*}
 
 theory Int2
 imports Finite2 WilsonRuss