diff --git a/lib/customErrors.js b/lib/customErrors.js
index 0ffdff400f..d9b34421a7 100644
--- a/lib/customErrors.js
+++ b/lib/customErrors.js
@@ -1,22 +1,22 @@
 'use strict';
 
 var util = require('util');
-var assert = require('assert')
-var RedisError = require('redis-parser').RedisError
-var ADD_STACKTRACE = false
+var assert = require('assert');
+var RedisError = require('redis-parser').RedisError;
+var ADD_STACKTRACE = false;
 
 function AbortError (obj, stack) {
-    assert(obj, 'The options argument is required')
-    assert.strictEqual(typeof obj, 'object', 'The options argument has to be of type object')
+    assert(obj, 'The options argument is required');
+    assert.strictEqual(typeof obj, 'object', 'The options argument has to be of type object');
 
-    RedisError.call(this, obj.message, ADD_STACKTRACE)
+    RedisError.call(this, obj.message, ADD_STACKTRACE);
     Object.defineProperty(this, 'message', {
         value: obj.message || '',
         configurable: true,
         writable: true
     });
     if (stack || stack === undefined) {
-        Error.captureStackTrace(this, AbortError)
+        Error.captureStackTrace(this, AbortError);
     }
     for (var keys = Object.keys(obj), key = keys.pop(); key; key = keys.pop()) {
         this[key] = obj[key];
@@ -24,10 +24,10 @@ function AbortError (obj, stack) {
 }
 
 function AggregateError (obj) {
-    assert(obj, 'The options argument is required')
-    assert.strictEqual(typeof obj, 'object', 'The options argument has to be of type object')
+    assert(obj, 'The options argument is required');
+    assert.strictEqual(typeof obj, 'object', 'The options argument has to be of type object');
 
-    AbortError.call(this, obj, ADD_STACKTRACE)
+    AbortError.call(this, obj, ADD_STACKTRACE);
     Object.defineProperty(this, 'message', {
         value: obj.message || '',
         configurable: true,