diff --git a/server/vbv_lernwelt/sso/views.py b/server/vbv_lernwelt/sso/views.py
index 275d34d2..04c27ed3 100644
--- a/server/vbv_lernwelt/sso/views.py
+++ b/server/vbv_lernwelt/sso/views.py
@@ -48,9 +48,10 @@ def authorize(request):
 
 
 def _user_data_from_token_data(token: dict) -> dict:
+    first_email = token.get("emails", [""])[0]
     return {
         "first_name": token.get("given_name", ""),
         "last_name": token.get("family_name", ""),
-        "username": token.get("preferred_username", ""),
-        "email": token.get("emails", [""])[0],
+        "username": token.get("preferred_username", first_email),
+        "email": first_email,
     }