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-rw-r--r--packages/order-utils/src/signature_utils.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/packages/order-utils/src/signature_utils.ts b/packages/order-utils/src/signature_utils.ts
index 44a7203a0..d8703bfda 100644
--- a/packages/order-utils/src/signature_utils.ts
+++ b/packages/order-utils/src/signature_utils.ts
@@ -277,7 +277,7 @@ export function parseECSignature(signature: string): ECSignature {
}
function hashTrezorPersonalMessage(message: Buffer): Buffer {
- const prefix = ethUtil.toBuffer('\x19Ethereum Signed Message:\n' + String.fromCharCode(message.length));
+ const prefix = ethUtil.toBuffer('\x19Ethereum Signed Message:\n' + String.fromCharCode(message.byteLength));
return ethUtil.sha3(Buffer.concat([prefix, message]));
}