diff --git a/tests/test.nim b/tests/test.nim
index 19147a2..b018a8a 100644
--- a/tests/test.nim
+++ b/tests/test.nim
@@ -1,6 +1,7 @@
 import std/unittest
 import std/math
 import std/strutils
+import std/sequtils
 
 import constantine/math/arithmetic
 import constantine/math/io/io_fields
@@ -31,9 +32,14 @@ suite "poseidon2":
       xs.add( toF(i) )
 
     let root = merkleRoot(xs)
-    check toHex(root) == "0x1eabbb64b76d5aecd393601c4a01878450e23f45fe8b2748bb63a615351b11d1"
+    check root.toHex == "0x1eabbb64b76d5aecd393601c4a01878450e23f45fe8b2748bb63a615351b11d1"
 
   test "merkle root of bytes":
+    let bytes = toSeq 1'u8..80'u8
+    let root = merkleRoot(bytes)
+    check root.toHex == "0x2d2d6f27d20a9e5597e20a888a4deac0e0600f92f0b9691ace0fdfab2fc1f500"
+
+  test "merkle root converts every 31 bytes to a field element":
     let hex = [ # 31 bytes per field element
       "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E",
       "1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D",