diff --git a/ftdetect/ruby-sinatra.vim b/ftdetect/ruby-sinatra.vim
index f5487fe..dc9d6df 100644
--- a/ftdetect/ruby-sinatra.vim
+++ b/ftdetect/ruby-sinatra.vim
@@ -2,7 +2,7 @@
 autocmd BufNewFile,BufRead *.rb
   \ let lines  = getline(1).getline(2).getline(3).getline(3).getline(4).getline(5)
   \|if lines =~? '[Ss]inatra'
-  \|  set filetype=ruby-sinatra
+  \|  set filetype=ruby-sinatra.ruby
   \|endif
 
 " I'm learning more.