diff --git a/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini b/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini
index 9b96f3f03a..c50b898055 100644
--- a/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini
+++ b/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini
@@ -84,7 +84,8 @@ reconnect_interval = 2
 
 # (ListOpt) Comma-separated list of <physical_network>:<bridge> tuples
 # mapping physical network names to the agent's node-specific OVS
-# bridge names to be used for flat and VLAN networks. Each bridge must
+# bridge names to be used for flat and VLAN networks. The length of
+# bridge names should be no more than 11. Each bridge must
 # exist, and should have a physical network interface configured as a
 # port. All physical networks listed in network_vlan_ranges on the
 # server should have mappings to appropriate bridges on each agent.