diff --git a/public/src/modules/sounds.js b/public/src/modules/sounds.js
index 01ad4ec2a8..5dfac33613 100644
--- a/public/src/modules/sounds.js
+++ b/public/src/modules/sounds.js
@@ -57,6 +57,8 @@ define('sounds', ['buzz'], function(buzz) {
 	};
 
 	Sounds.playFile = function(fileName) {
+		if (!fileName) return;
+
 		function play() {
 			if (loadedSounds[fileName]) {
 				loadedSounds[fileName].play();
diff --git a/src/database/mongo.js b/src/database/mongo.js
index d3abf16522..bed8f542b7 100644
--- a/src/database/mongo.js
+++ b/src/database/mongo.js
@@ -7,9 +7,7 @@
 		async = require('async'),
 		nconf = require('nconf'),
 		session = require('express-session'),
-		db,
-		mongoClient,
-		mongoStore;
+		db, mongoClient;
 
 	module.questions = [
 		{
diff --git a/src/meta/sounds.js b/src/meta/sounds.js
index b14a6375f8..3d41504d4f 100644
--- a/src/meta/sounds.js
+++ b/src/meta/sounds.js
@@ -79,7 +79,7 @@ module.exports = function(Meta) {
 				var	defaults = {
 						'notification': 'notification.mp3',
 						'chat-incoming': 'waterdrop-high.mp3',
-						'chat-outgoing': 'waterdrop-low.mp3'
+						'chat-outgoing': undefined
 					};
 
 				return callback(null, defaults);