diff --git a/app/models/changeset.rb b/app/models/changeset.rb
index b01809024..9b8ac5d70 100644
--- a/app/models/changeset.rb
+++ b/app/models/changeset.rb
@@ -263,7 +263,7 @@ class Changeset < ActiveRecord::Base
     end
     enc = encoding.blank? ? "UTF-8" : encoding
     if str.respond_to?(:force_encoding)
-      if enc != "UTF-8"
+      if enc.upcase != "UTF-8"
         str.force_encoding(enc)
         str = str.encode("UTF-8", :invalid => :replace,
               :undef => :replace, :replace => '?')