diff --git a/templates/newton/nova.conf b/templates/newton/nova.conf
index 1a10652c..c2b578f9 100644
--- a/templates/newton/nova.conf
+++ b/templates/newton/nova.conf
@@ -90,7 +90,7 @@ firewall_driver = nova.virt.firewall.NoopFirewallDriver
 {% endif -%}
 
 {% if network_manager_config -%}
-{% for key, value in network_manager_config.iteritems() -%}
+{% for key, value in network_manager_config.items() -%}
 {{ key }} = {{ value }}
 {% endfor -%}
 {% endif -%}