diff --git a/amt_test.go b/amt_test.go
index b401dc9..41e100a 100644
--- a/amt_test.go
+++ b/amt_test.go
@@ -30,7 +30,6 @@ func init() {
 }
 
 var (
-	bitWidths3     = []uint{8}
 	bitWidths2to18 = []uint{2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18}
 	bitWidths2to3  = []uint{2, 3}
 )
diff --git a/node.go b/node.go
index b9adcaf..d06e9c1 100644
--- a/node.go
+++ b/node.go
@@ -390,7 +390,7 @@ func (n *node) forEachAtParallel(ctx context.Context, bs cbor.IpldStore, bitWidt
 					}
 				}
 
-				dserv := bs.(*cbor.BatchOpIpldStore)
+				dserv := bs.(cbor.IpldBatchOpStore)
 				nodes := make([]interface{}, len(linksToVisit))
 				for j := 0; j < len(linksToVisit); j++ {
 					nodes[j] = new(internal.Node)