diff --git a/tryton/tryton/common/common.py b/tryton/tryton/common/common.py
index 2485131f13..b30267cbd6 100644
--- a/tryton/tryton/common/common.py
+++ b/tryton/tryton/common/common.py
@@ -423,6 +423,7 @@ def file_selection(title, filename='',
     win.add_buttons(*buttons)
     win.set_icon(TRYTON_ICON)
     if filename:
+        filename = slugify(filename)
         if action in (Gtk.FileChooserAction.SAVE,
                 Gtk.FileChooserAction.CREATE_FOLDER):
             win.set_current_name(filename)