diff --git a/lib/noosfero/plugin.rb b/lib/noosfero/plugin.rb
index b193d5e..80fbe8b 100644
--- a/lib/noosfero/plugin.rb
+++ b/lib/noosfero/plugin.rb
@@ -130,7 +130,7 @@ class Noosfero::Plugin
   end
 
   # -> Adds plugin-specific content types to CMS
-  # returns  = { content type class }
+  # returns  = [ContentClass1, ContentClass2, ...]
   def content_types
     nil
   end
--
libgit2 0.21.2