diff --git a/access/views.py b/access/views.py
index 4505f22..b141a2e 100644
--- a/access/views.py
+++ b/access/views.py
@@ -143,8 +143,9 @@ class DetailUserView(APIView):
 
         acc = request.JSON.get('account', None)
 
-        b_date = datetime.datetime.strptime(acc['b_day'], '%d.%m.%Y')  # TODO вынести форматы в настройки
-        acc['b_day'] = b_date.strftime('%Y-%m-%d')
+        if not acc['b_day'] is None:
+            b_date = datetime.datetime.strptime(acc['b_day'], '%d.%m.%Y')  # TODO вынести форматы в настройки
+            acc['b_day'] = b_date.strftime('%Y-%m-%d')
 
         acc['gender'] = 0 if acc['gender'] == "undefined" else 1 if acc['gender'] == "male" else 2