diff --git a/runtime/indent/aap.vim b/runtime/indent/aap.vim
index 78ac033..35828b4 100644
--- a/runtime/indent/aap.vim
+++ b/runtime/indent/aap.vim
@@ -1,7 +1,12 @@
 " Vim indent file
 " Language:	Aap recipe
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2003 Sep 08
+" Last Change:	2005 Jun 24
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
 
 " Works mostly like Python.
 runtime! indent/python.vim