diff --git a/src/main/java/io/zksync/abi/ZkTypeEncoder.java b/src/main/java/io/zksync/abi/ZkTypeEncoder.java
index 3362f81..52965e8 100644
--- a/src/main/java/io/zksync/abi/ZkTypeEncoder.java
+++ b/src/main/java/io/zksync/abi/ZkTypeEncoder.java
@@ -188,17 +188,15 @@ static String encodeBytes(BytesType bytesType) {
         byte[] value = bytesType.getValue();
         int length = value.length;
         int mod = length % MAX_BYTE_LENGTH;
-        String val = Numeric.toHexString(value);
         byte[] dest;
         if (mod != 0) {
             int padding = MAX_BYTE_LENGTH - mod;
             dest = new byte[padding];
-            return Numeric.toHexStringNoPrefix(dest) + Numeric.toHexStringNoPrefix(value);
+            return Numeric.toHexStringNoPrefix(value) + Numeric.toHexStringNoPrefix(dest);
         } else {
             dest = value;
         }
 
-        String x = Numeric.toHexString(value);
         return Numeric.toHexStringNoPrefix(dest);
     }
 
diff --git a/src/main/java/io/zksync/protocol/account/WalletL1.java b/src/main/java/io/zksync/protocol/account/WalletL1.java
index f90eb5e..410191f 100644
--- a/src/main/java/io/zksync/protocol/account/WalletL1.java
+++ b/src/main/java/io/zksync/protocol/account/WalletL1.java
@@ -943,7 +943,7 @@ public CompletableFuture<Boolean> isWithdrawalFinalized(String txHash, int index
         return sharedBridge.isWithdrawalFinalized(chainId.join().getChainId(), receipt.getL1BatchNumber(), BigInteger.valueOf(proof.join().getId())).sendAsync();
     }
 
-    public RemoteFunctionCall<TransactionReceipt> finalizeWithdraw(String txHash, int index) throws Exception {
+    public CompletableFuture<EthSendTransaction> finalizeWithdraw(String txHash, int index) throws Exception {
         ZkTransactionReceipt receipt = providerL2.zksGetTransactionReceipt(txHash).sendAsync().join().getResult();
 
         int logIndex = getWithdrawalLogIndex(receipt.getLogs(), index);
@@ -962,9 +962,21 @@ public RemoteFunctionCall<TransactionReceipt> finalizeWithdraw(String txHash, in
             merkle_proof.add(Numeric.hexStringToByteArray(l2ToL1MessageProof.getProof().get(i)));
         }
 
-        IL1Bridge il1Bridge = IL1Bridge.load(getL1BridgeContracts().sharedL1Bridge.getContractAddress(), providerL1, transactionManager, gasProvider);
+        String il1BridgeAddress = getL1BridgeContracts().sharedL1Bridge.getContractAddress();
 
-        return il1Bridge.finalizeWithdrawal(providerL2.ethChainId().sendAsync().join().getChainId(), l1BatchNumber, BigInteger.valueOf(l2ToL1MessageProof.getId()), receipt.getL1BatchTxIndex(), bytes_data, merkle_proof);
+        String calldata = IL1SharedBridge.encodeFinalizeWithdrawal(
+                providerL2.ethChainId().sendAsync().join().getChainId(),
+                l1BatchNumber,
+                BigInteger.valueOf(l2ToL1MessageProof.getId()),
+                receipt.getL1BatchTxIndex(),
+                bytes_data,
+                merkle_proof
+        );
+
+        Transaction tx = Transaction.createEthCallTransaction(credentials.getAddress(), il1BridgeAddress, calldata);
+        BigInteger gas = providerL1.ethEstimateGas(tx).sendAsync().join().getAmountUsed();
+
+        return providerL1.ethSendRawTransaction(Numeric.toHexStringNoPrefix(TransactionEncoder.signMessage(RawTransaction.createTransaction(providerL1.ethGetTransactionCount(signer.getAddress(), DefaultBlockParameterName.LATEST).sendAsync().join().getTransactionCount(), providerL1.ethGasPrice().sendAsync().join().getGasPrice(), gas, il1BridgeAddress, calldata), credentials))).sendAsync();
     }
 
     public int getWithdrawalLogIndex(List<Log> logs, int index){
diff --git a/src/main/java/io/zksync/wrappers/IL1SharedBridge.java b/src/main/java/io/zksync/wrappers/IL1SharedBridge.java
index 838befb..25e6ccd 100644
--- a/src/main/java/io/zksync/wrappers/IL1SharedBridge.java
+++ b/src/main/java/io/zksync/wrappers/IL1SharedBridge.java
@@ -7,7 +7,10 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
+
+import io.zksync.abi.ZkFunctionEncoder;
 import org.web3j.abi.EventEncoder;
+import org.web3j.abi.FunctionEncoder;
 import org.web3j.abi.TypeReference;
 import org.web3j.abi.datatypes.Address;
 import org.web3j.abi.datatypes.Bool;
@@ -447,6 +450,21 @@ public RemoteFunctionCall<TransactionReceipt> depositLegacyErc20Bridge(String _m
         return executeRemoteCallTransaction(function, weiValue);
     }
 
+    public static String encodeFinalizeWithdrawal(BigInteger _chainId, BigInteger _l2BatchNumber, BigInteger _l2MessageIndex, BigInteger _l2TxNumberInBatch, byte[] _message, List<byte[]> _merkleProof) {
+        final Function function = new Function(
+                FUNC_FINALIZEWITHDRAWAL,
+                Arrays.<Type>asList(new Uint256(_chainId),
+                        new Uint256(_l2BatchNumber),
+                        new Uint256(_l2MessageIndex),
+                        new org.web3j.abi.datatypes.generated.Uint16(_l2TxNumberInBatch),
+                        new DynamicBytes(_message),
+                        new DynamicArray<Bytes32>(
+                                Bytes32.class,
+                                org.web3j.abi.Utils.typeMap(_merkleProof, Bytes32.class))),
+                Collections.<TypeReference<?>>emptyList());
+        return ZkFunctionEncoder.encode(function);
+    }
+
     public RemoteFunctionCall<TransactionReceipt> finalizeWithdrawal(BigInteger _chainId, BigInteger _l2BatchNumber, BigInteger _l2MessageIndex, BigInteger _l2TxNumberInBatch, byte[] _message, List<byte[]> _merkleProof) {
         final Function function = new Function(
                 FUNC_FINALIZEWITHDRAWAL, 
diff --git a/src/test/java/io/zksync/integration/account/WalletTest.java b/src/test/java/io/zksync/integration/account/WalletTest.java
index 895f326..2a29679 100644
--- a/src/test/java/io/zksync/integration/account/WalletTest.java
+++ b/src/test/java/io/zksync/integration/account/WalletTest.java
@@ -434,8 +434,9 @@ public void testWithdrawEth() throws Exception {
         TransactionReceipt result = testWallet.withdraw(transaction).sendAsync().join();
         TransactionReceipt receipt = testWallet.getTransactionReceiptProcessor().waitFinalized(result.getTransactionHash());
 
-        TransactionReceipt finalizeWithdraw = testWallet.finalizeWithdraw(receipt.getTransactionHash(), 0).sendAsync().join();
-
+        assertFalse(testWallet.isWithdrawalFinalized(receipt.getTransactionHash(), 0).join());
+        EthSendTransaction finalizeWithdraw = testWallet.finalizeWithdraw(receipt.getTransactionHash(), 0).join();
+        assertNotNull(finalizeWithdraw.getResult());
         BigInteger senderAfter = testWallet.getBalance().sendAsync().join();
 
         assertNotNull(receipt);
@@ -476,7 +477,8 @@ public void testWithdrawErc20() throws Exception {
         TransactionReceipt result = testWallet.withdraw(transaction).sendAsync().join();
         TransactionReceipt receipt = testWallet.getTransactionReceiptProcessor().waitFinalized(result.getTransactionHash());
 
-        TransactionReceipt finalizeWithdraw = testWallet.finalizeWithdraw(receipt.getTransactionHash(), 0).sendAsync().join();
+        EthSendTransaction finalizeWithdraw = testWallet.finalizeWithdraw(receipt.getTransactionHash(), 0).join();
+        assertNotNull(finalizeWithdraw.getResult());
         BigInteger senderAfter = testWallet.getBalance(l2DAI).sendAsync().join();
 
         assertNotNull(receipt);