3 files changed, 2 insertions, 23 deletions
diff --git a/packages/order-utils/src/signature_utils.ts b/packages/order-utils/src/signature_utils.ts
index e5478d4d6..c0c9e71a7 100644
--- a/packages/order-utils/src/signature_utils.ts
+++ b/packages/order-utils/src/signature_utils.ts
@@ -291,7 +291,7 @@ export const signatureUtils = {
     /**
      * Combines the signature proof and the Signature Type.
      * @param signature The hex encoded signature proof
-     * @param signatureType The signature type, i.e EthSign, Trezor, Wallet etc.
+     * @param signatureType The signature type, i.e EthSign, Wallet etc.
      * @return Hex encoded string of signature proof with Signature Type
      */
     convertToSignatureWithType(signature: string, signatureType: SignatureType): string {
@@ -318,12 +318,6 @@ export const signatureUtils = {
                 const prefixedMsgHex = ethUtil.bufferToHex(prefixedMsgBuff);
                 return prefixedMsgHex;
             }
-            case SignerType.Trezor: {
-                const msgBuff = ethUtil.toBuffer(message);
-                const prefixedMsgBuff = hashTrezorPersonalMessage(msgBuff);
-                const prefixedMsgHex = ethUtil.bufferToHex(prefixedMsgBuff);
-                return prefixedMsgHex;
-            }
             default:
                 throw new Error(`Unrecognized SignerType: ${signerType}`);
         }
@@ -346,11 +340,6 @@ export const signatureUtils = {
     },
 };
 
-function hashTrezorPersonalMessage(message: Buffer): Buffer {
-    const prefix = ethUtil.toBuffer(`\x19Ethereum Signed Message:\n${message.byteLength}`);
-    return ethUtil.sha3(Buffer.concat([prefix, message]));
-}
-
 function parseValidatorSignature(signature: string): ValidatorSignature {
     assert.isOneOfExpectedSignatureTypes(signature, [SignatureType.Validator]);
     // tslint:disable:custom-no-magic-numbers
diff --git a/packages/order-utils/test/signature_utils_test.ts b/packages/order-utils/test/signature_utils_test.ts
index 0e7831b41..2ca1109a1 100644
--- a/packages/order-utils/test/signature_utils_test.ts
+++ b/packages/order-utils/test/signature_utils_test.ts
@@ -256,15 +256,6 @@ describe('Signature utils', () => {
             r: '0xaca7da997ad177f040240cdccf6905b71ab16b74434388c3a72f34fd25d64393',
             s: '0x46b2bac274ff29b48b3ea6e2d04c1336eaceafda3c53ab483fc3ff12fac3ebf2',
         };
-        it('should concatenate v,r,s and append the Trezor signature type', async () => {
-            const expectedSignatureWithSignatureType =
-                '0x1baca7da997ad177f040240cdccf6905b71ab16b74434388c3a72f34fd25d6439346b2bac274ff29b48b3ea6e2d04c1336eaceafda3c53ab483fc3ff12fac3ebf208';
-            const signatureWithSignatureType = signatureUtils.convertECSignatureToSignatureHex(
-                ecSignature,
-                SignerType.Trezor,
-            );
-            expect(signatureWithSignatureType).to.equal(expectedSignatureWithSignatureType);
-        });
         it('should concatenate v,r,s and append the EthSign signature type when SignerType is Default', async () => {
             const expectedSignatureWithSignatureType =
                 '0x1baca7da997ad177f040240cdccf6905b71ab16b74434388c3a72f34fd25d6439346b2bac274ff29b48b3ea6e2d04c1336eaceafda3c53ab483fc3ff12fac3ebf203';
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 5261ddfe2..4375fc631 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -140,14 +140,13 @@ export enum SignatureType {
 }
 
 /**
- * The type of the Signer implementation. Some signer implementations use different message prefixes (e.g Trezor) or implement different
+ * The type of the Signer implementation. Some signer implementations use different message prefixes or implement different
  * eth_sign behaviour (e.g Metamask). Default assumes a spec compliant `eth_sign`.
  */
 export enum SignerType {
     Default = 'DEFAULT',
     Ledger = 'LEDGER',
     Metamask = 'METAMASK',
-    Trezor = 'TREZOR',
 }
 
 export enum AssetProxyId {