diff --git a/test/util/malicious/tree.go b/test/util/malicious/tree.go
index f8b440b544..c31fe64966 100644
--- a/test/util/malicious/tree.go
+++ b/test/util/malicious/tree.go
@@ -50,6 +50,7 @@ func (c constructor) NewTree(_ rsmt2d.Axis, axisIndex uint) rsmt2d.Tree {
 		nmt.NamespaceIDSize(appconsts.NamespaceSize),
 		nmt.IgnoreMaxNamespace(true),
 	}
+	copts = append(copts, c.opts...)
 	nmtTree := nmt.New(appconsts.NewBaseHashFunc(), copts...)
 	maliciousTree := &BlindTree{nmtTree}
 	newTree := wrapper.NewErasuredNamespacedMerkleTree(c.squareSize, axisIndex, copts...)