diff --git a/ereuse_devicehub/resources/user/models.py b/ereuse_devicehub/resources/user/models.py
index 56d8d722..b675c43e 100644
--- a/ereuse_devicehub/resources/user/models.py
+++ b/ereuse_devicehub/resources/user/models.py
@@ -181,7 +181,7 @@ class User(UserMixin, Thing):
             return []
 
         self.get_abac_did()
-        role = session.get('iota_abac_attributes', {}).get('role', [])
+        role = session.get('iota_abac_attributes', {}).get('role', '')
         return [(x.strip(), x.strip()) for x in role.split(",")]
 
     def _call_abac(self, path):