diff --git a/modeltranslation/admin.py b/modeltranslation/admin.py
index f48571b..a4493c7 100644
--- a/modeltranslation/admin.py
+++ b/modeltranslation/admin.py
@@ -94,6 +94,7 @@ class TranslationBaseModelAdmin(BaseModelAdmin):
         Returns a new list with replaced fields. If `option` contains no
         registered fields, it is returned unmodified.
 
+        >>> self = TranslationAdmin()  # PyFlakes
         >>> print(self.trans_opts.fields.keys())
         ['title',]
         >>> get_translation_fields(self.trans_opts.fields.keys()[0])