diff -r de33539c2db2 -r 5c1931a42176 src/pyams_thesaurus/zmi/thesaurus.py
--- a/src/pyams_thesaurus/zmi/thesaurus.py	Fri Apr 17 14:02:46 2015 +0200
+++ b/src/pyams_thesaurus/zmi/thesaurus.py	Fri Apr 17 14:54:09 2015 +0200
@@ -9,8 +9,6 @@
 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
 # FOR A PARTICULAR PURPOSE.
 #
-from pyramid.response import Response
-from pyams_form.schema import CloseButton
 
 __docformat__ = 'restructuredtext'
 
@@ -37,6 +35,7 @@
 
 # import packages
 from pyams_form.form import AJAXAddForm, AJAXEditForm
+from pyams_form.schema import CloseButton
 from pyams_pagelet.pagelet import pagelet_config
 from pyams_skin.layer import IPyAMSLayer
 from pyams_skin.page import InnerPage
@@ -58,6 +57,7 @@
 from pyramid.events import subscriber
 from pyramid.exceptions import NotFound
 from pyramid.httpexceptions import HTTPBadRequest
+from pyramid.response import Response
 from pyramid.url import resource_url
 from pyramid.view import view_config
 from z3c.form import field, button
@@ -391,8 +391,9 @@
 
     def updateWidgets(self, prefix=None):
         super(ThesaurusImportForm, self).updateWidgets(prefix)
-        self.widgets['language'].noValueMessage = _("-- automatic selection -- (if available)")
-        self.widgets['encoding'].noValueMessage = _("-- automatic selection -- (if available)")
+        translate = self.request.localizer.translate
+        self.widgets['language'].noValueMessage = translate(_("-- automatic selection -- (if available)"))
+        self.widgets['encoding'].noValueMessage = translate(_("-- automatic selection -- (if available)"))
 
     def create(self, data):
         configuration = ThesaurusUpdaterConfiguration(data)
@@ -447,7 +448,7 @@
     """Thesaurus export form"""
 
     title = _("Thesaurus")
-    legend = _("export thesaurus terms")
+    legend = _("Export thesaurus terms")
     icon_css_class = 'fa fa-fw fa-download'
 
     fields = field.Fields(IThesaurusExporterConfiguration)