1 files changed, 14 insertions, 2 deletions
diff --git a/app/scripts/lib/tx-state-manager.js b/app/scripts/lib/tx-state-manager.js
index 23c915a61..d8ea17400 100644
--- a/app/scripts/lib/tx-state-manager.js
+++ b/app/scripts/lib/tx-state-manager.js
@@ -108,6 +108,10 @@ module.exports = class TransactionStateManager extends EventEmitter {
   updateTx (txMeta, note) {
     // validate txParams
     if (txMeta.txParams) {
+      if (typeof txMeta.txParams.data === 'undefined') {
+        delete txMeta.txParams.data
+      }
+
       this.validateTxParams(txMeta.txParams)
     }
 
@@ -140,8 +144,16 @@ module.exports = class TransactionStateManager extends EventEmitter {
   validateTxParams(txParams) {
     Object.keys(txParams).forEach((key) => {
       const value = txParams[key]
-      if (typeof value !== 'string') throw new Error(`${key}: ${value} in txParams is not a string`)
-      if (!ethUtil.isHexPrefixed(value)) throw new Error('is not hex prefixed, everything on txParams must be hex prefixed')
+      // validate types
+      switch (key) {
+        case 'chainId':
+          if (typeof value !== 'number' && typeof value !== 'string') throw new Error(`${key} in txParams is not a Number or hex string. got: (${value})`)
+          break
+        default:
+          if (typeof value !== 'string') throw new Error(`${key} in txParams is not a string. got: (${value})`)
+          if (!ethUtil.isHexPrefixed(value)) throw new Error(`${key} in txParams is not hex prefixed. got: (${value})`)
+          break
+      }
     })
   }