diff --git a/src/dgsi/models.py b/src/dgsi/models.py
index b60cd1d..70c2b4d 100644
--- a/src/dgsi/models.py
+++ b/src/dgsi/models.py
@@ -4,6 +4,7 @@ from typing import Optional
 
 from asgiref.sync import async_to_sync
 from django.contrib.auth.models import AbstractUser
+from kanidm.exceptions import NoMatchingEntries
 from kanidm.models.person import Person
 
 from shared.kanidm import client
@@ -23,14 +24,19 @@ class User(AbstractUser):
     """
 
     @cached_property
-    def kanidm(self) -> KanidmProfile:
-        radius_data = async_to_sync(client.get_radius_token)(self.username).data
+    def kanidm(self) -> Optional[KanidmProfile]:
+        try:
+            radius_data = async_to_sync(client.get_radius_token)(self.username).data
 
-        return KanidmProfile(
-            person=async_to_sync(client.person_account_get)(self.username),
-            radius_secret=radius_data and radius_data.get("secret"),
-        )
+            return KanidmProfile(
+                person=async_to_sync(client.person_account_get)(self.username),
+                radius_secret=radius_data and radius_data.get("secret"),
+            )
+        except NoMatchingEntries:
+            return None
 
     @property
     def is_admin(self) -> bool:
-        return ADMIN_GROUP in self.kanidm.person.memberof
+        return (self.kanidm is not None) and (
+            ADMIN_GROUP in self.kanidm.person.memberof
+        )