diff --git a/src/web-auth/transaction-manager.js b/src/web-auth/transaction-manager.js
index 0a3b18b6..855ba712 100644
--- a/src/web-auth/transaction-manager.js
+++ b/src/web-auth/transaction-manager.js
@@ -54,7 +54,7 @@ TransactionManager.prototype.generateTransaction = function(
       state: state,
       lastUsedConnection: lastUsedConnection
     },
-    times.MINUTES_30
+    { expires: times.MINUTES_30 }
   );
   return {
     state: state,
diff --git a/test/web-auth/transaction-manager.test.js b/test/web-auth/transaction-manager.test.js
index 9c6b632d..5f3834f9 100644
--- a/test/web-auth/transaction-manager.test.js
+++ b/test/web-auth/transaction-manager.test.js
@@ -4,6 +4,7 @@ import { stub, spy } from 'sinon';
 import TransactionManager from '../../src/web-auth/transaction-manager';
 import random from '../../src/helper/random';
 import Storage from '../../src/helper/storage';
+import * as times from '../../src/helper/times';
 
 context('TransactionManager', function() {
   beforeEach(function() {
@@ -130,6 +131,12 @@ context('TransactionManager', function() {
         lastUsedConnection: 'lastUsedConnection'
       });
     });
+    it('stores state with expires option equal to 30 mins', function() {
+      this.tm.generateTransaction('appState', 'state', 'nonce', null);
+      expect(Storage.prototype.setItem.calledOnce).to.be(true);
+      expect(typeof Storage.prototype.setItem.lastCall.args[2]).to.be('object');
+      expect(Storage.prototype.setItem.lastCall.args[2]).to.be.eql({ expires: times.MINUTES_30 });
+    });
   });
   context('getStoredTransaction', function() {
     beforeEach(function() {