--- a/chrome/utils/BootstrapLoader.jsm
+++ b/chrome/utils/BootstrapLoader.jsm
@@ -7,12 +7,12 @@
 let EXPORTED_SYMBOLS = [];

 const { XPCOMUtils } = ChromeUtils.import('resource://gre/modules/XPCOMUtils.jsm');
+const Services = globalThis.Services || ChromeUtils.import("resource://gre/modules/Services.jsm").Services;
 
 XPCOMUtils.defineLazyModuleGetters(this, {
   Blocklist: 'resource://gre/modules/Blocklist.jsm',
   ConsoleAPI: 'resource://gre/modules/Console.jsm',
   InstallRDF: 'chrome://userchromejs/content/RDFManifestConverter.jsm',
-  Services: 'resource://gre/modules/Services.jsm',
 });
 
 Services.obs.addObserver(doc => {
--- a/chrome/utils/RDFDataSource.jsm
+++ b/chrome/utils/RDFDataSource.jsm
@@ -32,12 +32,10 @@
 var EXPORTED_SYMBOLS = ["RDFLiteral", "RDFBlankNode", "RDFResource", "RDFDataSource"];
 
 const {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
+const Services = globalThis.Services || ChromeUtils.import("resource://gre/modules/Services.jsm").Services;
 
 XPCOMUtils.defineLazyGlobalGetters(this, ["DOMParser", "Element", "fetch"]);
 
-ChromeUtils.defineModuleGetter(this, "Services",
-                               "resource://gre/modules/Services.jsm");
-
 function isElement(obj) {
   return Element.isInstance(obj);
 }
--- a/chrome/utils/userChrome.jsm
+++ b/chrome/utils/userChrome.jsm
@@ -1,7 +1,7 @@
 let EXPORTED_SYMBOLS = [];

-const { Services } = ChromeUtils.import('resource://gre/modules/Services.jsm');
+const Services = globalThis.Services || ChromeUtils.import("resource://gre/modules/Services.jsm").Services;
 const { xPref } = ChromeUtils.import('chrome://userchromejs/content/xPref.jsm');
 const { Management } = ChromeUtils.import('resource://gre/modules/Extension.jsm');
 const { AppConstants } = ChromeUtils.import('resource://gre/modules/AppConstants.jsm');

--- a/chrome/utils/xPref.jsm
+++ b/chrome/utils/xPref.jsm
@@ -1,6 +1,6 @@
 let EXPORTED_SYMBOLS = ['xPref'];

-const {Services} = ChromeUtils.import('resource://gre/modules/Services.jsm');
+const Services = globalThis.Services || ChromeUtils.import("resource://gre/modules/Services.jsm").Services;

 var xPref = {
   // Retorna o valor da preferência, seja qual for o tipo, mas não