diff --git a/openstack-common.conf b/openstack-common.conf
index 7bb3a3656..00364b7bd 100644
--- a/openstack-common.conf
+++ b/openstack-common.conf
@@ -1,5 +1,5 @@
 [DEFAULT]
 # The list of modules to copy from openstack-common
-modules=cfg,context,eventlet_backdoor,exception,excutils,fileutils,gettextutils,importutils,iniparser,jsonutils,local,lockutils,log,loopingcall,network_utils,notifier,policy,rpc,service,setup,threadgroup,timeutils,uuidutils,version
+modules=cfg,context,eventlet_backdoor,exception,excutils,fileutils,gettextutils,importutils,iniparser,jsonutils,local,lockutils,log,loopingcall,network_utils,notifier,periodic_task,policy,rpc,service,setup,threadgroup,timeutils,uuidutils,version
 # The base module to hold the copy of openstack.common
 base=quantum