diff --git a/authentik/core/models.py b/authentik/core/models.py
index de4b59222..7f4c25ca7 100644
--- a/authentik/core/models.py
+++ b/authentik/core/models.py
@@ -160,8 +160,8 @@ class User(SerializerModel, GuardianUserMixin, AbstractUser):
         """Recursively get all groups this user is a member of.
         At least one query is done to get the direct groups of the user, with groups
         there are at most 3 queries done"""
-        direct_groups = tuple(
-            str(x) for x in self.ak_groups.all().values_list("pk", flat=True).iterator()
+        direct_groups = list(
+            x for x in self.ak_groups.all().values_list("pk", flat=True).iterator()
         )
         if len(direct_groups) < 1:
             return Group.objects.none()
@@ -169,7 +169,7 @@ class User(SerializerModel, GuardianUserMixin, AbstractUser):
         WITH RECURSIVE parents AS (
             SELECT authentik_core_group.*, 0 AS relative_depth
             FROM authentik_core_group
-            WHERE authentik_core_group.group_uuid IN (%s)
+            WHERE authentik_core_group.group_uuid = ANY(%s)
 
             UNION ALL
 
@@ -185,7 +185,7 @@ class User(SerializerModel, GuardianUserMixin, AbstractUser):
         GROUP BY group_uuid, name
         ORDER BY name;
         """
-        group_pks = [group.pk for group in Group.objects.raw(query, direct_groups).iterator()]
+        group_pks = [group.pk for group in Group.objects.raw(query, [direct_groups]).iterator()]
         return Group.objects.filter(pk__in=group_pks)
 
     def group_attributes(self, request: Optional[HttpRequest] = None) -> dict[str, Any]:
diff --git a/authentik/core/tests/test_groups.py b/authentik/core/tests/test_groups.py
index 5ac6e7e67..65a0cc3e6 100644
--- a/authentik/core/tests/test_groups.py
+++ b/authentik/core/tests/test_groups.py
@@ -13,7 +13,9 @@ class TestGroups(TestCase):
         user = User.objects.create(username=generate_id())
         user2 = User.objects.create(username=generate_id())
         group = Group.objects.create(name=generate_id())
+        other_group = Group.objects.create(name=generate_id())
         group.users.add(user)
+        other_group.users.add(user)
         self.assertTrue(group.is_member(user))
         self.assertFalse(group.is_member(user2))