diff --git a/internal/proxy/segment.go b/internal/proxy/segment.go
index 6c9ca02286..838ed48799 100644
--- a/internal/proxy/segment.go
+++ b/internal/proxy/segment.go
@@ -148,6 +148,7 @@ type segIDAssigner struct {
 	countPerRPC uint32
 }
 
+// newSegIDAssigner creates a new segIDAssigner
 func newSegIDAssigner(ctx context.Context, dataCoord DataCoord, getTickFunc func() Timestamp) (*segIDAssigner, error) {
 	ctx1, cancel := context.WithCancel(ctx)
 	sa := &segIDAssigner{