From 9230041df01260642289ca8d26c5f53ab4424146 Mon Sep 17 00:00:00 2001
From: Gabor Greif <gabor@dfinity.org>
Date: Tue, 18 Jan 2022 01:22:44 +0100
Subject: [PATCH] fix #135

---
 motoko/ledger-transfer/src/ledger_transfer/Account.mo | 1 +
 1 file changed, 1 insertion(+)

diff --git a/motoko/ledger-transfer/src/ledger_transfer/Account.mo b/motoko/ledger-transfer/src/ledger_transfer/Account.mo
index 92f6cc92d..2de499983 100644
--- a/motoko/ledger-transfer/src/ledger_transfer/Account.mo
+++ b/motoko/ledger-transfer/src/ledger_transfer/Account.mo
@@ -29,6 +29,7 @@ module {
     hash.write([0x0A]);
     hash.write(Blob.toArray(Text.encodeUtf8("account-id")));
     hash.write(Blob.toArray(Principal.toBlob(principal)));
+    assert subaccount.size() == 32;
     hash.write(Blob.toArray(subaccount));
     let hashSum = hash.sum();
     let crc32Bytes = beBytes(CRC32.ofArray(hashSum));