diff --git a/inbox/test/Inbox.test.js b/inbox/test/Inbox.test.js
index 64af32c5..6a10c50a 100644
--- a/inbox/test/Inbox.test.js
+++ b/inbox/test/Inbox.test.js
@@ -2,6 +2,10 @@ const assert = require('assert');
 const ganache = require('ganache-cli');
 const Web3 = require('web3');
 const web3 = new Web3(ganache.provider());
+///MaxListenerExceededWarning fixed!
+require('events').EventEmitter.defaultMaxListeners = 15;
+
+
 const { interface, bytecode } = require('../compile');
 
 let accounts;
diff --git a/kickstart/test/Campaign.test.js b/kickstart/test/Campaign.test.js
index 3e71096e..490fdb47 100644
--- a/kickstart/test/Campaign.test.js
+++ b/kickstart/test/Campaign.test.js
@@ -2,6 +2,11 @@ const assert = require('assert');
 const ganache = require('ganache-cli');
 const Web3 = require('web3');
 const web3 = new Web3(ganache.provider());
+///MaxListenerExceededWarning fix. 
+require('events').EventEmitter.defaultMaxListeners = 27;
+
+///MaxListenerExceededWarning fixed!
+require('events').EventEmitter.defaultMaxListeners = 27;
 
 const compiledFactory = require('../ethereum/build/CampaignFactory.json');
 const compiledCampaign = require('../ethereum/build/Campaign.json');
diff --git a/lottery/test/Lottery.test.js b/lottery/test/Lottery.test.js
index f836088f..bf606f35 100644
--- a/lottery/test/Lottery.test.js
+++ b/lottery/test/Lottery.test.js
@@ -2,6 +2,9 @@ const assert = require('assert');
 const ganache = require('ganache-cli');
 const Web3 = require('web3');
 const web3 = new Web3(ganache.provider());
+///MaxListenerExceededWarning fixed!
+require('events').EventEmitter.defaultMaxListeners = 21;
+
 
 const { interface, bytecode } = require('../compile');