diff --git a/examples/optimism/scripts/changeFeeParams.js b/examples/optimism/scripts/changeFeeParams.js
index cbdc18c..ef6cf2f 100644
--- a/examples/optimism/scripts/changeFeeParams.js
+++ b/examples/optimism/scripts/changeFeeParams.js
@@ -60,11 +60,7 @@ task('changeFeeParams', 'Change fee params for zkLink').setAction(async (taskArg
   const adapterParams = ethers.utils.defaultAbiCoder.encode(['uint256'], [minGasLimit]);
   const { INIT_FEE_PARAMS } = require('../../../script/zksync_era');
   console.log('Prepare to forward the message to L2...');
-  let tx = await arbitrator.changeFeeParams(optimismL1GatewayAddr, INIT_FEE_PARAMS, adapterParams, {
-    maxFeePerGas: 200000000000, // 200 Gwei
-    maxPriorityFeePerGas: 5000000000, // 5 Gwei
-    gasLimit: 5000000,
-  });
+  let tx = await arbitrator.changeFeeParams(optimismL1GatewayAddr, INIT_FEE_PARAMS, adapterParams);
   const txHash = tx.hash;
   await tx.wait();
   console.log(`The tx hash: ${txHash}`);
diff --git a/examples/optimism/scripts/setValidator.js b/examples/optimism/scripts/setValidator.js
index d75c3e2..943758d 100644
--- a/examples/optimism/scripts/setValidator.js
+++ b/examples/optimism/scripts/setValidator.js
@@ -66,11 +66,7 @@ task('setValidator', 'Set validator for zkLink')
     const minGasLimit = 200000;
     const adapterParams = ethers.utils.defaultAbiCoder.encode(['uint256'], [minGasLimit]);
     console.log('Prepare to forward the message to L2...');
-    let tx = await arbitrator.setValidator(optimismL1GatewayAddr, validatorAddr, isActive, adapterParams, {
-      maxFeePerGas: 200000000000, // 200 Gwei
-      maxPriorityFeePerGas: 5000000000, // 5 Gwei
-      gasLimit: 5000000,
-    });
+    let tx = await arbitrator.setValidator(optimismL1GatewayAddr, validatorAddr, isActive, adapterParams);
     const txHash = tx.hash;
     await tx.wait();
     console.log(`The tx hash: ${txHash}`);
diff --git a/examples/optimism/scripts/syncBatchRoot.js b/examples/optimism/scripts/syncBatchRoot.js
index 944114e..9c749df 100644
--- a/examples/optimism/scripts/syncBatchRoot.js
+++ b/examples/optimism/scripts/syncBatchRoot.js
@@ -80,10 +80,7 @@ task('syncBatchRoot', 'Forward message to L2').setAction(async (taskArgs, hre) =
   const minGasLimit = 200000;
   const adapterParams = ethers.utils.defaultAbiCoder.encode(['uint256'], [minGasLimit]);
   console.log('Prepare to forward the message to L2...');
-  let tx = await arbitrator.forwardMessage(optimismL1GatewayAddr, 0, executeCalldata, adapterParams, {
-    maxFeePerGas: 10000000000,
-    maxPriorityFeePerGas: 5000000000,
-  });
+  let tx = await arbitrator.forwardMessage(optimismL1GatewayAddr, 0, executeCalldata, adapterParams);
   const txHash = tx.hash;
   await tx.wait();
   console.log(`The tx hash: ${txHash}`);