diff --git a/config/initializers/mime_types.rb b/config/initializers/mime_types.rb
index 3549b83..8f8bef4 100644
--- a/config/initializers/mime_types.rb
+++ b/config/initializers/mime_types.rb
@@ -4,4 +4,5 @@
 # Mime::Type.register "text/richtext", :rtf
 # Mime::Type.register_alias "text/html", :iphone
 
-Mime::Type.register_alias 'text/plain', :patch
+Mime::Type.register_alias "text/plain", :diff
+Mime::Type.register_alias "text/plain", :patch
--
libgit2 0.21.2