diff --git a/modules/sdk-coin-eth/src/eth.ts b/modules/sdk-coin-eth/src/eth.ts
index 2ba3b225a2..d68b21c8ad 100644
--- a/modules/sdk-coin-eth/src/eth.ts
+++ b/modules/sdk-coin-eth/src/eth.ts
@@ -429,7 +429,7 @@ export class Eth extends AbstractEthLikeNewCoins {
       nonce:
         params.signingKeyNonce !== undefined ? params.signingKeyNonce : params.txPrebuild.halfSigned?.backupKeyNonce,
       value: 0,
-      gasPrice: new optionalDeps.ethUtil.BN(txPrebuild.gasPrice),
+      gasPrice: txPrebuild.eip1559 ? undefined : new optionalDeps.ethUtil.BN(txPrebuild.gasPrice),
       gasLimit: new optionalDeps.ethUtil.BN(txPrebuild.gasLimit),
       data: sendData,
     };
diff --git a/modules/sdk-coin-eth/test/fixtures/eth.ts b/modules/sdk-coin-eth/test/fixtures/eth.ts
index 311b176e61..69a773373c 100644
--- a/modules/sdk-coin-eth/test/fixtures/eth.ts
+++ b/modules/sdk-coin-eth/test/fixtures/eth.ts
@@ -151,6 +151,33 @@ module.exports.WRWUnsignedSweepETHTx = {
   nextContractSequenceId: 1,
 };
 
+module.exports.WRWUnsignedSweepEIP1559ETHTx = {
+  tx: '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',
+  userKey:
+    'xpub661MyMwAqRbcFcNDKt46HgPAJTfNyQUS6M7i8jUwZKHz9wZGaK1XdQuT8XU5PkFfbrfoGXc1C4QD9PDJ7zhpu52rLzzynovwgcXh7NtDbH9',
+  backupKey:
+    'xpub661MyMwAqRbcGUJYcAgycBqG5HrQoUJAvBv7PEbvjGGffdtMP8hx3DX9AwzaY4vA7ynqHfxzRTRLwS2E9DH1HRPG8u7kWXd4JMCNgonGGnk',
+  coin: 'teth',
+  eip1559: { maxFeePerGas: '40000000000', maxPriorityFeePerGas: '2000000000' },
+  gasLimit: '500000',
+  recipients: [
+    {
+      address: '0xa98fdfc2c711260cd665a3884b509b4a5ad6f4e8',
+      amount: '4000000000000000000',
+    },
+  ],
+  walletContractAddress: '0xfd12f1d563650fbdd9314dce06992159778f6343',
+  amount: '4000000000000000000',
+  backupKeyNonce: 0,
+  recipient: {
+    address: '0xa98fdfc2c711260cd665a3884b509b4a5ad6f4e8',
+    amount: '4000000000000000000',
+  },
+  expireTime: 1600800540,
+  contractSequenceId: 1,
+  nextContractSequenceId: 1,
+};
+
 module.exports.WRWUnsignedSweepERC20Tx = {
   tx: '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',
   userKey:
diff --git a/modules/sdk-coin-eth/test/unit/ethWallet.ts b/modules/sdk-coin-eth/test/unit/ethWallet.ts
index 3e36160e4c..fc00197596 100644
--- a/modules/sdk-coin-eth/test/unit/ethWallet.ts
+++ b/modules/sdk-coin-eth/test/unit/ethWallet.ts
@@ -485,4 +485,30 @@ describe('final-sign transaction from WRW', function () {
     outputs[0].address.should.equal(fixtures.WRWUnsignedSweepERC20Tx.recipient.address);
     outputs[0].amount.should.equal(fixtures.WRWUnsignedSweepERC20Tx.recipient.amount);
   });
+
+  it('should add a second EIP-1559 signature to unsigned sweep for teth without throwing when gasPrice is absent', async function () {
+    const bitgo = TestBitGo.decorate(BitGoAPI, { env: 'test' });
+    bitgo.safeRegister('teth', Teth.createInstance);
+    const basecoin: any = bitgo.coin('teth');
+    const gasLimit = 500000;
+    const prv =
+      'xprv9s21ZrQH143K3D8TXfvAJgHVfTEeQNW5Ys9wZtnUZkqPzFzSjbEJrWC1vZ4GnXCvR7rQL2UFX3RSuYeU9MrERm1XBvACow7c36vnz5iYyj2';
+    const tx = {
+      txPrebuild: fixtures.WRWUnsignedSweepEIP1559ETHTx,
+      prv,
+    };
+    const halfSigned = await basecoin.signTransaction(tx);
+
+    const wrapper = {} as SignTransactionOptions;
+    wrapper.txPrebuild = halfSigned;
+    wrapper.txPrebuild.recipients = halfSigned.halfSigned.recipients;
+    wrapper.txPrebuild.eip1559 = fixtures.WRWUnsignedSweepEIP1559ETHTx.eip1559;
+    wrapper.txPrebuild.gasLimit = gasLimit.toString();
+    wrapper.isLastSignature = true;
+    wrapper.walletContractAddress = fixtures.WRWUnsignedSweepEIP1559ETHTx.walletContractAddress;
+    wrapper.prv = prv;
+
+    const finalSignedTx = await basecoin.signTransaction(wrapper);
+    finalSignedTx.should.have.property('txHex');
+  });
 });