diff --git a/server/vbv_lernwelt/core/model_utils.py b/server/vbv_lernwelt/core/model_utils.py
index a8b3a0c1..77b8897d 100644
--- a/server/vbv_lernwelt/core/model_utils.py
+++ b/server/vbv_lernwelt/core/model_utils.py
@@ -157,7 +157,7 @@ def migrate_avatars(apps=None, schema_editor=None):
         User = apps.get_model("core", "User")
         UserImage = apps.get_model("media_files", "UserImage")
 
-    # Models created by Django migration don't contain methods of the original models.
+    # Models created by Django migration don't contain methods of the parent model.
     # We need to add them manually.
     from wagtail.images.models import AbstractImage
 
@@ -166,7 +166,7 @@ def migrate_avatars(apps=None, schema_editor=None):
     avatar_dir = settings.APPS_DIR / "static" / "avatars"
 
     for user in User.objects.all().exclude(
-        avatar_url="/static/avatars/myvbv-default-avatar.png"
+            avatar_url="/static/avatars/myvbv-default-avatar.png"
     ):
         if not user.avatar_url:
             continue