diff --git a/runtime/compiler/rubyunit.vim b/runtime/compiler/rubyunit.vim
index 218ba60..74a6f01 100644
--- a/runtime/compiler/rubyunit.vim
+++ b/runtime/compiler/rubyunit.vim
@@ -32,4 +32,4 @@
 let &cpo = s:cpo_save
 unlet s:cpo_save
 
-" vim: nowrap sw=2 sts=2 ts=8 ff=unix:
+" vim: nowrap sw=2 sts=2 ts=8: