diff --git a/runtime/doc/os_risc.txt b/runtime/doc/os_risc.txt
index 095d5a9..d951b8e 100644
--- a/runtime/doc/os_risc.txt
+++ b/runtime/doc/os_risc.txt
@@ -9,4 +9,4 @@
 If you would like to use Vim on RISC OS get the files from before that patch.
 
 
- vim:tw=78:ts=8:ft=help:norl:
+ vim:tw=78:ts=8:noet:ft=help:norl: