diff --git a/internal/querynode/segment.go b/internal/querynode/segment.go
index 1304793005..666e224da0 100644
--- a/internal/querynode/segment.go
+++ b/internal/querynode/segment.go
@@ -294,7 +294,7 @@ func (s *Segment) search(searchReq *searchRequest) (*SearchResult, error) {
 	}
 
 	var searchResult SearchResult
-	log.Debug("do search on segment", zap.Int64("segmentID", s.segmentID), zap.Int32("segmentType", int32(s.segmentType)))
+	log.Debug("do search on segment", zap.Int64("segmentID", s.segmentID), zap.String("segmentType", s.segmentType.String()))
 	tr := timerecord.NewTimeRecorder("cgoSearch")
 	status := C.Search(s.segmentPtr, searchReq.plan.cSearchPlan, searchReq.cPlaceholderGroup,
 		C.uint64_t(searchReq.timestamp), &searchResult.cSearchResult, C.int64_t(s.segmentID))
@@ -329,7 +329,7 @@ func (s *Segment) retrieve(plan *RetrievePlan) (*segcorepb.RetrieveResults, erro
 	status := C.Retrieve(s.segmentPtr, plan.cRetrievePlan, ts, &retrieveResult.cRetrieveResult)
 	metrics.QueryNodeSQSegmentLatencyInCore.WithLabelValues(fmt.Sprint(Params.QueryNodeCfg.GetNodeID()),
 		metrics.QueryLabel).Observe(float64(tr.ElapseSpan().Milliseconds()))
-	log.Debug("do retrieve on segment", zap.Int64("segmentID", s.segmentID), zap.Int32("segmentType", int32(s.segmentType)))
+	log.Debug("do retrieve on segment", zap.Int64("segmentID", s.segmentID), zap.String("segmentType", s.segmentType.String()))
 	if err := HandleCStatus(&status, "Retrieve failed"); err != nil {
 		return nil, err
 	}