diff --git a/contracts/contract.js b/contracts/contract.js
index a856f596d..6377f4f6d 100644
--- a/contracts/contract.js
+++ b/contracts/contract.js
@@ -15,7 +15,7 @@ var utils = (function() {
 })();
 
 var allowedTransactionKeys = {
-    data: true, from: true, gasLimit: true, gasPrice:true, to: true, value: true
+    data: true, from: true, gasLimit: true, gasPrice:true, nonce: true, to: true, value: true
 }
 
 function copyObject(object) {