diff --git a/runtime/doc/vi_diff.txt b/runtime/doc/vi_diff.txt
index a395c88..ddcb09d 100644
--- a/runtime/doc/vi_diff.txt
+++ b/runtime/doc/vi_diff.txt
@@ -1021,4 +1021,4 @@
 - ex test 534 fails because .exrc isn't read in silent mode.
 
 
- vim:tw=78:ts=8:ft=help:norl:
+ vim:tw=78:ts=8:noet:ft=help:norl: