diff --git i/extension.js w/extension.js
index c151057..1b6dfc3 100644
--- i/extension.js
+++ w/extension.js
@@ -717,7 +717,7 @@ const EasyScreenCastIndicator = GObject.registerClass({
             Lib.TalkativeLog('-*-execute post command');
 
             // launch cmd after registration
-            const tmpCmd = `/usr/bin/sh -c "${this._settings.getOption('s', Settings.POST_CMD_SETTING_KEY)}"`;
+            const tmpCmd = `/bin/sh -c "${this._settings.getOption('s', Settings.POST_CMD_SETTING_KEY)}"`;
 
             const mapObj = {
                 _fpath: pathFile,
diff --git i/prefs.js w/prefs.js
index e0dd1a2..9dcb87a 100644
--- i/prefs.js
+++ w/prefs.js
@@ -13,8 +13,8 @@
 'use strict';
 
 import GIRepository from 'gi://GIRepository';
-GIRepository.Repository.prepend_search_path('/usr/lib64/gnome-shell');
-GIRepository.Repository.prepend_library_path('/usr/lib64/gnome-shell');
+GIRepository.Repository.prepend_search_path('@gnomeShell@/lib/gnome-shell');
+GIRepository.Repository.prepend_library_path('@gnomeShell@/lib/gnome-shell');
 
 import Adw from 'gi://Adw';
 import GObject from 'gi://GObject';
@@ -713,7 +713,7 @@ const EasyScreenCastSettingsWidget = GObject.registerClass({
                 Lib.TalkativeLog('-^-NOT SET xdg-user video');
 
                 ctx.CtrlExe.Execute(
-                    '/usr/bin/sh -c "echo $HOME"',
+                    '/bin/sh -c "echo $HOME"',
                     true,
                     (success, out) => {
                         Lib.TalkativeLog(`-^-CALLBACK sync S: ${success} out: ${out}`);
@@ -883,7 +883,7 @@ const EasyScreenCastSettingsWidget = GObject.registerClass({
                 );
 
                 ctx.CtrlExe.Execute(
-                    'journalctl /usr/bin/gnome-shell --since "15 min ago" --output=cat --no-pager',
+                    'journalctl @gnomeShell@/bin/.gnome-shell-wrapped --since "15 min ago" --output=cat --no-pager',
                     false,
                     success => {
                         Lib.TalkativeLog(`-^-CALLBACK async S= ${success}`);
diff --git i/utilaudio.js w/utilaudio.js
index b07e181..ed7d3ba 100644
--- i/utilaudio.js
+++ w/utilaudio.js
@@ -14,10 +14,8 @@
 
 import GObject from 'gi://GObject';
 import GIRepository from 'gi://GIRepository';
-GIRepository.Repository.prepend_search_path('/usr/lib/gnome-shell');
-GIRepository.Repository.prepend_library_path('/usr/lib/gnome-shell');
-GIRepository.Repository.prepend_search_path('/usr/lib64/gnome-shell');
-GIRepository.Repository.prepend_library_path('/usr/lib64/gnome-shell');
+GIRepository.Repository.prepend_search_path('@gnomeShell@/lib/gnome-shell');
+GIRepository.Repository.prepend_library_path('@gnomeShell@/lib/gnome-shell');
 import Gvc from 'gi://Gvc';
 
 import * as Lib from './convenience.js';