diff --git a/internal/datacoord/channel_manager_factory.go b/internal/datacoord/channel_manager_factory.go
index d2010478f1..b8a9b93b49 100644
--- a/internal/datacoord/channel_manager_factory.go
+++ b/internal/datacoord/channel_manager_factory.go
@@ -82,6 +82,7 @@ func (f *ConsistentHashChannelPolicyFactory) NewRegisterPolicy() RegisterPolicy
 	return ConsistentHashRegisterPolicy(f.hashring)
 }
 
+// NewDeregisterPolicy create a new dereigster policy
 func (f *ConsistentHashChannelPolicyFactory) NewDeregisterPolicy() DeregisterPolicy {
 	return ConsistentHashDeregisterPolicy(f.hashring)
 }