the custom field needs an explicit english translation which differs from the other fields' name. if not it will fallback to the german value and this test would fail for the wrong reason.

spec/models/custom_field_spec.rb

@@ -42,8 +42,14 @@ describe CustomField do
         before do
           I18n.locale = :de
           field2.name = "taken_name"
-          field2.save!
+
+          # this fields needs an explicit english translations
+          # otherwise it falls back using the german one
           I18n.locale = :en
+          field2.name = "unique_name"
+
+          field2.save!
+
           field.name = "taken_name"
         end