diff --git a/src/hnswutils.c b/src/hnswutils.c
index bdec9bd..1246872 100644
--- a/src/hnswutils.c
+++ b/src/hnswutils.c
@@ -813,7 +813,7 @@ HnswSearchLayer(char *base, Datum q, List *ep, int ef, int lc, Relation index, F
 	pairingheap *C = pairingheap_allocate(CompareNearestCandidates, NULL);
 	pairingheap *W = pairingheap_allocate(CompareFurthestCandidates, NULL);
 	int			wlen = 0;
-	visited_hash v2;
+	visited_hash vh;
 	ListCell   *lc2;
 	HnswNeighborArray *localNeighborhood = NULL;
 	Size		neighborhoodSize = 0;
@@ -823,7 +823,7 @@ HnswSearchLayer(char *base, Datum q, List *ep, int ef, int lc, Relation index, F
 
 	if (v == NULL)
 	{
-		v = &v2;
+		v = &vh;
 		initVisited = true;
 	}