diff --git a/odoo/addons/base/wizard/base_import_language_views.xml b/odoo/addons/base/wizard/base_import_language_views.xml
index 7d30ccdc608..0d4d79922a3 100644
--- a/odoo/addons/base/wizard/base_import_language_views.xml
+++ b/odoo/addons/base/wizard/base_import_language_views.xml
@@ -10,7 +10,7 @@
                     <group>
                         <field name="name" placeholder="e.g. English"/>
                         <field name="code" string="Code" placeholder="e.g. en_US"/>
-                        <field name="data" filename="filename"/>
+                        <field name="data" filename="filename" options="{'accepted_file_extensions': '.csv,.po'}"/>
                         <field name="filename" invisible="1"/>
                         <field name="overwrite" groups="base.group_no_one"/>
                     </group>