diff --git a/server/vbv_lernwelt/core/create_default_users.py b/server/vbv_lernwelt/core/create_default_users.py
index 82c7c3ce..99a93c28 100644
--- a/server/vbv_lernwelt/core/create_default_users.py
+++ b/server/vbv_lernwelt/core/create_default_users.py
@@ -73,7 +73,7 @@ def create_default_users(user_model=User, group_model=Group, default_password=No
         email='christoph.bosshard@vbv-afa.ch',
         first_name='Christoph',
         last_name='Bosshard',
-        avatar_url='/static/avatars/avatar_christoph.jpg',
+        avatar_url='/static/avatars/avatar_christoph.png',
         password='myvbv1234'
     )