diff --git a/storage/remote/codec.go b/storage/remote/codec.go
index 377dbd977..9d53b952f 100644
--- a/storage/remote/codec.go
+++ b/storage/remote/codec.go
@@ -783,6 +783,7 @@ func labelsToLabelsProto(lbls labels.Labels, buf []prompb.Label) []prompb.Label
 	return result
 }
 
+// TODO
 func labelsToUint32SliceStr(lbls labels.Labels, symbolTable *rwSymbolTable, buf []uint32) []uint32 {
 	result := buf[:0]
 	lbls.Range(func(l labels.Label) {
@@ -794,6 +795,7 @@ func labelsToUint32SliceStr(lbls labels.Labels, symbolTable *rwSymbolTable, buf
 	return result
 }
 
+// TODO
 func Uint32StrRefToLabels(symbols []string, minLabels []uint32) labels.Labels {
 	ls := labels.NewScratchBuilder(len(minLabels) / 2)