diff --git a/internal/querycoord/query_coord.go b/internal/querycoord/query_coord.go
index 9ce4a93f09..48c72c1fd8 100644
--- a/internal/querycoord/query_coord.go
+++ b/internal/querycoord/query_coord.go
@@ -63,6 +63,7 @@ type queryChannelInfo struct {
 	responseChannel string
 }
 
+// Params is param table of query coordinator
 var Params paramtable.GlobalParamTable
 
 // QueryCoord is the coordinator of queryNodes