diff --git a/tempest/services/compute/xml/security_groups_client.py b/tempest/services/compute/xml/security_groups_client.py
index 4f9d347..5d86790 100644
--- a/tempest/services/compute/xml/security_groups_client.py
+++ b/tempest/services/compute/xml/security_groups_client.py
@@ -98,7 +98,9 @@
         """
         group_rule = Element("security_group_rule")
 
-        elements = {k: kwargs.get(k) for k in ('cidr', 'group_id')}
+        elements = dict()
+        elements['cidr'] = kwargs.get('cidr')
+        elements['group_id'] = kwargs.get('group_id')
         elements['parent_group_id'] = parent_group_id
         elements['ip_protocol'] = ip_proto
         elements['from_port'] = from_port