diff --git a/lib/RequestShortener.js b/lib/RequestShortener.js
index b4a803fd13b..2d3b5f1231d 100644
--- a/lib/RequestShortener.js
+++ b/lib/RequestShortener.js
@@ -7,7 +7,7 @@
 const path = require("path");
 const NORMALIZE_SLASH_DIRECTION_REGEXP = /\\/g;
 const PATH_CHARS_REGEXP = /[-[\]{}()*+?.,\\^$|#\s]/g;
-const SEPERATOR_REGEXP = /[/\\]$/;
+const SEPARATOR_REGEXP = /[/\\]$/;
 const FRONT_OR_BACK_BANG_REGEXP = /^!|!$/g;
 const INDEX_JS_REGEXP = /\/index.js(!|\?|\(query\))/g;
 
@@ -23,14 +23,14 @@ const createRegExpForPath = (path) => {
 class RequestShortener {
 	constructor(directory) {
 		directory = normalizeBackSlashDirection(directory);
-		if(SEPERATOR_REGEXP.test(directory)) directory = directory.substr(0, directory.length - 1);
+		if(SEPARATOR_REGEXP.test(directory)) directory = directory.substr(0, directory.length - 1);
 
 		if(directory) {
 			this.currentDirectoryRegExp = createRegExpForPath(directory);
 		}
 
 		const dirname = path.dirname(directory);
-		const endsWithSeperator = SEPERATOR_REGEXP.test(dirname);
+		const endsWithSeperator = SEPARATOR_REGEXP.test(dirname);
 		const parentDirectory = endsWithSeperator ? dirname.substr(0, dirname.length - 1) : dirname;
 		if(parentDirectory && parentDirectory !== directory) {
 			this.parentDirectoryRegExp = createRegExpForPath(parentDirectory);