diff --git a/test/messages/commands/index.js b/test/messages/commands/index.js
index ae4d39e..9da412d 100644
--- a/test/messages/commands/index.js
+++ b/test/messages/commands/index.js
@@ -1,6 +1,7 @@
 'use strict';
 
 var should = require('chai').should();
+var expect = require('chai').expect;
 var P2P = require('../../../');
 var Messages = P2P.Messages;
 var sinon = require('sinon');
@@ -263,6 +264,28 @@ describe('Command Messages', function() {
     });
   });
 
+  describe('Reject', function() {
+    it('should set properties from arg in constructor', function() {
+      var message = messages.Reject({
+        message: 'tx',
+        ccode: 0x01,
+        reason: 'transaction is malformed',
+        data: new Buffer('12345678901234567890123456789012', 'hex')
+      });
+      message.message.should.equal('tx');
+      message.ccode.should.equal(0x01);
+      message.reason.should.equal('transaction is malformed');
+      message.data.toString('hex').should.equal('12345678901234567890123456789012');
+    });
+    it('should let arg be optional in constructor', function() {
+      var message = messages.Reject();
+      expect(message.message).to.be.undefined;
+      expect(message.ccode).to.be.undefined;
+      expect(message.reason).to.be.undefined;
+      expect(message.data).to.be.undefined;
+    });
+  });
+
   describe('Version', function() {
     it('should set the default relay property as true', function() {
       var message = messages.Version();