diff --git a/core/oidc/userinfo.py b/core/oidc/userinfo.py
index 34584e8..70402e7 100644
--- a/core/oidc/userinfo.py
+++ b/core/oidc/userinfo.py
@@ -2,7 +2,7 @@ def userinfo(claims, user):
     claims['email'] = user.email
     claims['email_verified'] = bool(user.profile.email_verified)
     claims['given_name'] = user.profile.first_name
-    claims['last_name'] = user.profile.last_name
+    claims['family_name'] = user.profile.last_name
     claims['nickname'] = user.profile.nickname
     claims['preferred_username'] = user.profile.preferred_username
     claims['website'] = user.profile.website