diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/Number_Theory/Residues.thy
--- a/src/HOL/Number_Theory/Residues.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Number_Theory/Residues.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -5,7 +5,7 @@
 Euler's theorem and Wilson's theorem.
 *)
 
-header {* Residue rings *}
+section {* Residue rings *}
 
 theory Residues
 imports