diff --git a/runtime/doc/diff.txt b/runtime/doc/diff.txt
index e263e6b..502fb49 100644
--- a/runtime/doc/diff.txt
+++ b/runtime/doc/diff.txt
@@ -441,4 +441,4 @@
 directory are accidentally patched.  Vim will also delete files starting with
 v:fname_in and ending in ".rej" and ".orig".
 
- vim:tw=78:ts=8:ft=help:norl:
+ vim:tw=78:ts=8:noet:ft=help:norl: