diff --git a/js/models/core/Wallet.js b/js/models/core/Wallet.js
index a85aadc43..f214625a6 100644
--- a/js/models/core/Wallet.js
+++ b/js/models/core/Wallet.js
@@ -798,7 +798,6 @@ Wallet.prototype.sendTx = function(ntxid, cb) {
   if (txp.merchant) {
     return this.sendPaymentTx(ntxid, cb);
   }
-
   var tx = txp.builder.build();
   if (!tx.isComplete())
     throw new Error('Tx is not complete. Can not broadcast');
@@ -818,7 +817,7 @@ Wallet.prototype.sendTx = function(ntxid, cb) {
       self.store();
       return cb(txid);
     } else {
-      self.log('Sent failed. Checking is the TX was sent already');
+      self.log('Sent failed. Checking if the TX was sent already');
       self._checkSentTx(ntxid, function(txid) {
         if (txid)
           self.store();
diff --git a/test/mocks/FakeBlockchain.js b/test/mocks/FakeBlockchain.js
index e4c3997bc..8438d8a75 100644
--- a/test/mocks/FakeBlockchain.js
+++ b/test/mocks/FakeBlockchain.js
@@ -46,4 +46,9 @@ FakeBlockchain.prototype.sendRawTransaction = function(rawtx, cb) {
   return cb(txid);
 };
 
+FakeBlockchain.prototype.checkSentTx = function (tx, cb) {
+  var txid = '0be0fb4579911be829e3077202e1ab47fcc12cf3ab8f8487ccceae768e1f95fa';
+  return cb(null, txid);  
+};
+
 module.exports = FakeBlockchain;
diff --git a/test/mocks/FakeBuilder.js b/test/mocks/FakeBuilder.js
index ace53be70..9b3aea95b 100644
--- a/test/mocks/FakeBuilder.js
+++ b/test/mocks/FakeBuilder.js
@@ -8,7 +8,6 @@ function Tx() {
   this.ins = [{s: VALID_SCRIPTSIG_BUF }];
 };
 
-
 Tx.prototype.getHashType = function() {
   return 1;
 };
@@ -20,7 +19,6 @@ Tx.prototype.hashForSignature = function() {
   return new Buffer('31103626e162f1cbfab6b95b08c9f6e78aae128523261cb37f8dfd4783cb09a7', 'hex');
 };
 
-
 function FakeBuilder() {
   this.test = 1;
   this.tx = new Tx();
diff --git a/test/test.Wallet.js b/test/test.Wallet.js
index df588df86..6406f5bc5 100644
--- a/test/test.Wallet.js
+++ b/test/test.Wallet.js
@@ -15,6 +15,7 @@ var PrivateKey = copay.PrivateKey;
 var Storage = require('./mocks/FakeStorage');
 var Network = require('./mocks/FakeNetwork');
 var Blockchain = require('./mocks/FakeBlockchain');
+var Builder = require('./mocks/FakeBuilder');
 var bitcore = bitcore || require('bitcore');
 var TransactionBuilder = bitcore.TransactionBuilder;
 var Transaction = bitcore.Transaction;
@@ -104,6 +105,7 @@ describe('Wallet model', function() {
     c.verbose = walletConfig.verbose;
     c.version = '0.0.1';
 
+
     return new Wallet(c);
   }
 
@@ -739,6 +741,33 @@ describe('Wallet model', function() {
       });
     });
   });
+  it('should fail to send incomplete transaction', function(done) {
+    var w = createW2(null, 1);
+    var utxo = createUTXO(w);
+    w.blockchain.fixUnspent(utxo);
+    w.createTx(toAddress, amountSatStr, null, function(ntxid) {
+      var txp = w.txProposals.get(ntxid);
+      // Assign fake builder
+      txp.builder = new Builder();
+      sinon.stub(txp.builder, 'build').returns({ isComplete: function () { return false; }});
+      (function () { 
+        w.sendTx(ntxid);
+      }).should.throw('Tx is not complete. Can not broadcast');
+      done();
+    });
+  });
+  it('should check if transaction already sent when failing to send', function(done) {
+    var w = createW2(null, 1);
+    var utxo = createUTXO(w);
+    w.blockchain.fixUnspent(utxo);
+    w.createTx(toAddress, amountSatStr, null, function(ntxid) {
+      sinon.stub(w.blockchain, 'sendRawTransaction').yields(undefined);
+      var spyCheckSentTx = sinon.spy(w, '_checkSentTx');
+      w.sendTx(ntxid, function () {});
+      chai.expect(spyCheckSentTx.calledOnce).to.be.true;
+      done();
+    });
+  });
   it('should send TxProposal', function(done) {
     var w = cachedCreateW2();
     var utxo = createUTXO(w);