--- a/toolkit/components/extensions/Extension.jsm
+++ b/toolkit/components/extensions/Extension.jsm
@@ -70,18 +70,16 @@ XPCOMUtils.defineLazyModuleGetter(this, 
 XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
                                   "resource://gre/modules/NetUtil.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "OS",
                                   "resource://gre/modules/osfile.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
                                   "resource://gre/modules/PrivateBrowsingUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Preferences",
                                   "resource://gre/modules/Preferences.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "require",
-                                  "resource://devtools/shared/Loader.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Schemas",
                                   "resource://gre/modules/Schemas.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "TelemetryStopwatch",
                                   "resource://gre/modules/TelemetryStopwatch.jsm");
 
 XPCOMUtils.defineLazyGetter(
   this, "processScript",
   () => Cc["@mozilla.org/webextensions/extension-process-script;1"]

--- a/toolkit/components/extensions/ext-browser-content.js
+++ b/toolkit/components/extensions/ext-browser-content.js
@@ -8,18 +8,16 @@ const {classes: Cc, interfaces: Ci, util
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "clearTimeout",
                                   "resource://gre/modules/Timer.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "ExtensionCommon",
                                   "resource://gre/modules/ExtensionCommon.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
                                   "resource://gre/modules/NetUtil.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "require",
-                                  "resource://devtools/shared/Loader.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "setTimeout",
                                   "resource://gre/modules/Timer.jsm");
 
 Cu.import("resource://gre/modules/ExtensionUtils.jsm");
 const {
   getWinUtils,
 } = ExtensionUtils;