diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index 4e07f5a986..2744d951b8 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -291,6 +291,7 @@ function configure_ceilometer {
         iniset $CEILOMETER_CONF coordination backend_url $CEILOMETER_COORDINATION_URL
         iniset $CEILOMETER_CONF notification workload_partitioning True
         iniset $CEILOMETER_CONF notification workers $API_WORKERS
+        iniset $CEILOMETER_CONF pipeline_processing_queues $API_WORKERS
     fi
 
     if [[ -n "$CEILOMETER_CACHE_BACKEND" ]]; then