Calling a class method from an instance method needs to be done explicitly

1 files changed, 1 insertions, 1 deletions

diff --git a/app/models/incoming_message.rb b/app/models/incoming_message.rb
index 9e0bfdbe7..119eb0b4b 100644
--- a/app/models/incoming_message.rb
+++ b/app/models/incoming_message.rb
@@ -828,7 +828,7 @@ class IncomingMessage < ActiveRecord::Base
                 # e.g. http://www.whatdotheyknow.com/request/35/response/177
                 # XXX This is a bit of a hack as it is calling a convert to text routine.
                 # Could instead call a sanitize HTML one.
-                text = _get_attachment_text_internal_one_file(part.content_type, text)
+                text = self.class._get_attachment_text_internal_one_file(part.content_type, text)
             end
         end