diff --git a/frontend/src/js/blockchain.js b/frontend/src/js/blockchain.js
index fe5bc5a..ce79601 100644
--- a/frontend/src/js/blockchain.js
+++ b/frontend/src/js/blockchain.js
@@ -79,8 +79,8 @@ async function signTransaction(privateKey, to, value, data, gas = []) {
             value: _values[i],
             from: addresses[i],
             data: data,
-            gasPrice: tbn(await web3.eth.getGasPrice()).times(1.3).integerValue().toNumber() ? tbn(await web3.eth.getGasPrice()).times(1.3).integerValue().toNumber() : 210000000*3,
-            gas: gas[i] ? gas[i] : 56000
+            gasPrice: tbn(await window.web3.eth.getGasPrice()).times(1.5).integerValue().toNumber() ? tbn(await window.web3.eth.getGasPrice()).times(1.3).integerValue().toNumber() : 210000000*3,
+            gas: gas[i] ? gas[i] : 21000
         };
         const tx = new ethereumjs.Tx(txParam);
         const privateKeyBuffer = ethereumjs.Buffer.Buffer.from(_privateKeys[i].substring(2), 'hex');