diff --git a/src/hnswutils.c b/src/hnswutils.c
index 4b81741..5a178ad 100644
--- a/src/hnswutils.c
+++ b/src/hnswutils.c
@@ -854,7 +854,7 @@ HnswSearchLayer(char *base, HnswQuery * q, List *ep, int ef, int lc, Relation in
 	HnswReadStreamData streamData;
 	ReadStream *stream = NULL;
 
-	/* TODO Use READ_STREAM_MAINTENANCE when creating index */
+	/* TODO Use READ_STREAM_MAINTENANCE when creating index or vacuuming */
 	if (!inMemory)
 		stream = read_stream_begin_relation(READ_STREAM_DEFAULT, NULL, index, MAIN_FORKNUM, HnswReadStreamNextBlock, &streamData, sizeof(OffsetNumber));
 #endif