diff --git a/mayan/apps/permissions/serializers.py b/mayan/apps/permissions/serializers.py
index 7449079d2d..b1ece06f7f 100644
--- a/mayan/apps/permissions/serializers.py
+++ b/mayan/apps/permissions/serializers.py
@@ -20,7 +20,7 @@ class PermissionSerializer(serializers.Serializer):
     def to_representation(self, instance):
         if isinstance(instance, StoredPermission):
             return super(PermissionSerializer, self).to_representation(
-                instance.volatile_permission
+                instance.get_volatile_permission()
             )
         else:
             return super(PermissionSerializer, self).to_representation(