diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/IMP/Compiler.thy
--- a/src/HOL/IMP/Compiler.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/IMP/Compiler.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -1,6 +1,6 @@
 (* Author: Tobias Nipkow and Gerwin Klein *)
 
-header "Compiler for IMP"
+section "Compiler for IMP"
 
 theory Compiler imports Big_Step Star
 begin