diff --git a/runtime/doc/if_ruby.txt b/runtime/doc/if_ruby.txt
index 572a6ec..b140476 100644
--- a/runtime/doc/if_ruby.txt
+++ b/runtime/doc/if_ruby.txt
@@ -234,4 +234,4 @@
 with.
 
 ==============================================================================
- vim:tw=78:ts=8:ft=help:norl:
+ vim:tw=78:ts=8:noet:ft=help:norl: