diff --git a/internal/distributed/querycoord/client/client.go b/internal/distributed/querycoord/client/client.go
index 51de6ad9a5..ffc5d45d1d 100644
--- a/internal/distributed/querycoord/client/client.go
+++ b/internal/distributed/querycoord/client/client.go
@@ -129,6 +129,7 @@ func NewClient(ctx context.Context, metaRoot string, etcdEndpoints []string) (*C
 	return client, nil
 }
 
+// Init initializes QueryCoord's grpc client.
 func (c *Client) Init() error {
 	Params.Init()
 	return nil