1 files changed, 1 insertions, 1 deletions
diff --git a/type.go b/type.go
index 72aeecc..db9ddc6 100644
--- a/type.go
+++ b/type.go
@@ -282,7 +282,7 @@ func NewTreeHeadV1(lr *types.LogRootV1) *TreeHeadV1 {
 		uint64(lr.TimestampNanos / 1000 / 1000),
 		uint64(lr.TreeSize),
 		NodeHash{lr.RootHash},
-		nil,
+		make([]byte, 0),
 	}
 }