diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index 40231963e..226fbdb93 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -416,7 +416,7 @@ def app_upgrade(auth, app=[], url=None, file=None):
 
         # Execute App upgrade script
         os.system('chown -hR admin: %s' % INSTALL_TMP)
-        if hook_exec(extracted_app_folder +'/scripts/upgrade', args=args_list, env=env_dict) != 0:
+        if hook_exec(extracted_app_folder + '/scripts/upgrade', args=args_list, env=env_dict, user="root") != 0:
             logger.error(m18n.n('app_upgrade_failed', app=app_instance_name))
         else:
             now = int(time.time())
@@ -545,7 +545,7 @@ def app_install(auth, app, label=None, args=None, no_remove_on_failure=False):
     try:
         install_retcode = hook_exec(
             os.path.join(extracted_app_folder, 'scripts/install'),
-            args=args_list, env=env_dict)
+            args=args_list, env=env_dict, user="root")
     except (KeyboardInterrupt, EOFError):
         install_retcode = -1
     except:
@@ -562,7 +562,7 @@ def app_install(auth, app, label=None, args=None, no_remove_on_failure=False):
                 # Execute remove script
                 remove_retcode = hook_exec(
                     os.path.join(extracted_app_folder, 'scripts/remove'),
-                    args=[app_instance_name], env=env_dict_remove)
+                    args=[app_instance_name], env=env_dict_remove, user="root")
                 if remove_retcode != 0:
                     logger.warning(m18n.n('app_not_properly_removed',
                                           app=app_instance_name))
@@ -632,7 +632,7 @@ def app_remove(auth, app):
     env_dict["YNH_APP_INSTANCE_NAME"] = app
     env_dict["YNH_APP_INSTANCE_NUMBER"] = str(app_instance_nb)
 
-    if hook_exec('/tmp/yunohost_remove/scripts/remove', args=args_list, env=env_dict) == 0:
+    if hook_exec('/tmp/yunohost_remove/scripts/remove', args=args_list, env=env_dict, user="root") == 0:
         logger.success(m18n.n('app_removed', app=app))
 
     if os.path.exists(app_setting_path): shutil.rmtree(app_setting_path)
diff --git a/src/yunohost/backup.py b/src/yunohost/backup.py
index a79df8604..725bf2fda 100644
--- a/src/yunohost/backup.py
+++ b/src/yunohost/backup.py
@@ -234,7 +234,7 @@ def backup_create(name=None, description=None, output_directory=None,
                 env_dict["YNH_APP_BACKUP_DIR"] = tmp_app_bkp_dir
 
                 hook_exec(tmp_script, args=[tmp_app_bkp_dir, app_instance_name],
-                          raise_on_error=True, chdir=tmp_app_bkp_dir, env=env_dict)
+                          raise_on_error=True, chdir=tmp_app_bkp_dir, env=env_dict, user="root")
             except:
                 logger.exception(m18n.n('backup_app_failed', app=app_instance_name))
                 # Cleaning app backup directory
@@ -525,7 +525,7 @@ def backup_restore(auth, name, hooks=[], ignore_hooks=False,
 
                 # Execute app restore script
                 hook_exec(app_script, args=[tmp_app_bkp_dir, app_instance_name],
-                          raise_on_error=True, chdir=tmp_app_bkp_dir, env=env_dict)
+                          raise_on_error=True, chdir=tmp_app_bkp_dir, env=env_dict, user="root")
             except:
                 logger.exception(m18n.n('restore_app_failed', app=app_instance_name))
 
@@ -540,7 +540,7 @@ def backup_restore(auth, name, hooks=[], ignore_hooks=False,
                 # Execute remove script
                 # TODO: call app_remove instead
                 if hook_exec(app_script, args=[app_instance_name],
-                             env=env_dict_remove) != 0:
+                             env=env_dict_remove, user="root") != 0:
                     logger.warning(m18n.n('app_not_properly_removed',
                                           app=app_instance_name))
 
diff --git a/src/yunohost/hook.py b/src/yunohost/hook.py
index 137232ed3..b675caa2e 100644
--- a/src/yunohost/hook.py
+++ b/src/yunohost/hook.py
@@ -275,7 +275,7 @@ def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
                 hook_args = pre_callback(name=name, priority=priority,
                                          path=path, args=args)
                 hook_exec(path, args=hook_args, chdir=chdir, env=env,
-                          no_trace=no_trace, raise_on_error=True)
+                          no_trace=no_trace, raise_on_error=True, user="root")
             except MoulinetteError as e:
                 state = 'failed'
                 logger.error(e.strerror, exc_info=1)
@@ -292,7 +292,7 @@ def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
 
 
 def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
-              chdir=None, env=None):
+              chdir=None, env=None, user="admin"):
     """
     Execute hook from a file with arguments
 
@@ -303,10 +303,10 @@ def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
         no_trace -- Do not print each command that will be executed
         chdir -- The directory from where the script will be executed
         env -- Dictionnary of environment variables to export
+        user -- User with which to run the command
 
     """
     from moulinette.utils.process import call_async_output
-    from yunohost.app import _value_for_locale
 
     # Validate hook path
     if path[0] != '/':
@@ -327,7 +327,11 @@ def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
         cmd_script = path
 
     # Construct command to execute
-    command = ['sudo', '-n', '-u', 'admin', '-H', 'sh', '-c']
+    if user == "root":
+        command = ['sh', '-c']
+    else:
+        command = ['sudo', '-n', '-u', user, '-H', 'sh', '-c']
+
     if no_trace:
         cmd = '/bin/bash "{script}" {args}'
     else: