diff --git a/modoboa/admin/models/mailbox.py b/modoboa/admin/models/mailbox.py
index 790cf9fbb..d32005959 100644
--- a/modoboa/admin/models/mailbox.py
+++ b/modoboa/admin/models/mailbox.py
@@ -158,11 +158,11 @@ class Mailbox(AdminObject):
             if curuser != mbowner:
                 options["sudo_user"] = mbowner
             code, output = exec_cmd(
-                "doveadm user %s -f home" % self.full_address, **options
+                "doveadm user -f home %s" % self.full_address, **options
             )
             if code:
                 raise lib_exceptions.InternalError(
-                    _(u"Failed to retrieve mailbox location (%s)") % output)
+                    _("Failed to retrieve mailbox location (%s)") % output)
             self.__mail_home = output.strip()
         return self.__mail_home