diff --git a/themis/datatypes/deputy.py b/themis/datatypes/deputy.py
index 1ea5e4c..d854d7c 100644
--- a/themis/datatypes/deputy.py
+++ b/themis/datatypes/deputy.py
@@ -109,3 +109,10 @@ class Deputy(Item):
         if not self.birthdate:
             return ''
         return self.birthdate.strftime('%d/%m/%Y')
+
+    def sortname(self):
+       from plone.i18n.normalizer.fr import normalizer
+       # | replacement is an hack to get spaces to sort after letters
+       return normalizer.normalize('%s %s' % (
+                               self.lastname.replace(' ', '|'),
+                               self.firstname.replace(' ', '|'))).lower()