diff --git a/tempest/lib/services/compute/servers_client.py b/tempest/lib/services/compute/servers_client.py
index 0472eda..8e4eca1 100644
--- a/tempest/lib/services/compute/servers_client.py
+++ b/tempest/lib/services/compute/servers_client.py
@@ -61,7 +61,7 @@
         post_body = {'server': body}
 
         if hints:
-            post_body = dict(post_body.items() + hints.items())
+            post_body.update(hints)
 
         post_body = json.dumps(post_body)
         resp, body = self.post('servers', post_body)