diff --git a/src/js/proxified-containers.js b/src/js/proxified-containers.js
index 1333759..717f3bb 100644
--- a/src/js/proxified-containers.js
+++ b/src/js/proxified-containers.js
@@ -19,7 +19,7 @@ if (!("toJSON" in Error.prototype))
 proxifiedContainers = {
 
   // Slightly modified version of 'retrieve' which returns a direct proxy whenever an error is met.
-  retrieveFromBackground: function(cookieStoreId = null) {
+  retrieveFromBackground(cookieStoreId = null) {
     return new Promise((resolve, reject) => {
       proxifiedContainers.retrieve(cookieStoreId).then((success) => {
         resolve(success.proxy);
@@ -33,14 +33,14 @@ proxifiedContainers = {
     });
   },
 
-  report_proxy_error: function(error, identifier = null) {
+  report_proxy_error(error, identifier = null) {
     // Currently I print to console but this is inefficient
     const relevant_id_str = identifier === null ? "" : ` call supplied with id: ${identifier.toString()}`;
     browser.extension.getBackgroundPage().console.log(`proxifiedContainers error occured ${relevant_id_str}: ${JSON.stringify(error)}`);
   },
 
   // Resolves to a proxy object which can be used in the return of the listener required for browser.proxy.onRequest.addListener
-  retrieve: function(cookieStoreId = null) {
+  retrieve(cookieStoreId = null) {
     return new Promise((resolve, reject) => {
       browser.storage.local.get("proxifiedContainersKey").then((results) => {
         // Steps to test:
@@ -81,7 +81,7 @@ proxifiedContainers = {
       });
     });
   },
-  set: function(cookieStoreId, proxy, initialize = false) {
+  set(cookieStoreId, proxy, initialize = false) {
     return new Promise((resolve, reject) => {
       if (initialize === true) {
         const proxifiedContainersStore = [];
@@ -126,7 +126,7 @@ proxifiedContainers = {
       });
     });
   },
-  parseProxy: function(proxy_str) {
+  parseProxy(proxy_str) {
     const regexp = /(\b(\w+):(\w+)@)?(((?:\d{1,3}\.){3}\d{1,3}\b)|(\b(\w+)(\.(\w+))+))(:(\d+))?/;
     if (regexp.test(proxy_str) !== true)
       return false;