diff --git a/lib/neutron_plugins/ml2 b/lib/neutron_plugins/ml2
index e1f868f..f00feac 100644
--- a/lib/neutron_plugins/ml2
+++ b/lib/neutron_plugins/ml2
@@ -156,5 +156,9 @@
     return 0
 }
 
+function configure_qos_ml2 {
+    neutron_ml2_extension_driver_add "qos"
+}
+
 # Restore xtrace
 $_XTRACE_NEUTRON_ML2