diff --git a/app/scripts/controllers/transactions.js b/app/scripts/controllers/transactions.js
index a73a8b36d..0b78d62f1 100644
--- a/app/scripts/controllers/transactions.js
+++ b/app/scripts/controllers/transactions.js
@@ -315,6 +315,18 @@ module.exports = class TransactionController extends EventEmitter {
 //
 
   _normalizeTxParams (txParams) {
+    const acceptableKeys = [
+      'from',
+      'to',
+      'nonce',
+      'value',
+      'data',
+      'gas',
+      'gasPrice',
+    ]
+    Object.keys(txParams).forEach((key) => {
+      if (!acceptableKeys.includes(key)) delete txParams[key]
+    })
     delete txParams.chainId
 
     if ( !txParams.to ) {
diff --git a/test/unit/tx-controller-test.js b/test/unit/tx-controller-test.js
index 3fec9758f..e552464cf 100644
--- a/test/unit/tx-controller-test.js
+++ b/test/unit/tx-controller-test.js
@@ -239,6 +239,7 @@ describe('Transaction Controller', function () {
         from: 'a7df1beDBF813f57096dF77FCd515f0B3900e402',
         to: null,
         data: '68656c6c6f20776f726c64',
+        random: 'hello world',
       }
 
       txController._normalizeTxParams(txParams)
@@ -247,7 +248,7 @@ describe('Transaction Controller', function () {
       assert(!txParams.to, 'their should be no to address if null')
       assert.equal(txParams.from.slice(0, 2), '0x', 'from should be hexPrefixd')
       assert.equal(txParams.data.slice(0, 2), '0x', 'data should be hexPrefixd')
-
+      assert(!('random' in txParams), 'their should be no random key in txParams')
       txParams.to = 'a7df1beDBF813f57096dF77FCd515f0B3900e402'
 
       txController._normalizeTxParams(txParams)