diff --git a/src/documents/models.py b/src/documents/models.py
index 55a4174c4..621f20803 100644
--- a/src/documents/models.py
+++ b/src/documents/models.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 import dateutil.parser
 import logging
 import os