diff --git a/internal/querynode/meta_replica.go b/internal/querynode/meta_replica.go
index de6d738e4c..88652116af 100644
--- a/internal/querynode/meta_replica.go
+++ b/internal/querynode/meta_replica.go
@@ -623,7 +623,7 @@ func (replica *metaReplica) addSegmentPrivate(segment *Segment) error {
 		fmt.Sprint(Params.QueryNodeCfg.GetNodeID()),
 		fmt.Sprint(segment.collectionID),
 		fmt.Sprint(segment.partitionID),
-		string(segType),
+		segType.String(),
 		fmt.Sprint(segment.indexedFieldInfos.Len()),
 	).Inc()
 	if rowCount > 0 {
@@ -731,7 +731,7 @@ func (replica *metaReplica) removeSegmentPrivate(segmentID UniqueID, segType seg
 			fmt.Sprint(Params.QueryNodeCfg.GetNodeID()),
 			fmt.Sprint(segment.collectionID),
 			fmt.Sprint(segment.partitionID),
-			string(segType),
+			segType.String(),
 			// Note: this field is mutable after segment is loaded.
 			fmt.Sprint(segment.indexedFieldInfos.Len()),
 		).Dec()