diff --git a/odoo/addons/base/wizard/base_update_translations.py b/odoo/addons/base/wizard/base_update_translations.py
index 0ac9b301d7b..40a99f4f133 100644
--- a/odoo/addons/base/wizard/base_update_translations.py
+++ b/odoo/addons/base/wizard/base_update_translations.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+import tarfile
 import tempfile
 
 from odoo import api, fields, models, tools, _
@@ -27,6 +28,11 @@ class BaseUpdateTranslations(models.TransientModel):
 
     def act_update(self):
         with tempfile.NamedTemporaryFile() as buf:
-            tools.trans_export(self.lang, ['all'], buf, 'po', self._cr)
-            tools.trans_load_data(self._cr, buf, 'po', self.lang, create_empty_translation=True)
+            tools.trans_export(self.lang, ['all'], buf, 'tgz', self._cr)
+            buf.seek(0)
+            tar = tarfile.open(fileobj=buf)
+            for file_info in tar:
+                module_file = tar.extractfile(file_info)
+                tools.trans_load_data(self._cr, module_file, 'po', self.lang, create_empty_translation=True)
+            tar.close()
         return {'type': 'ir.actions.act_window_close'}