diff --git a/addons/mrp/i18n/mrp.pot b/addons/mrp/i18n/mrp.pot
index 2bb04be2905..b8cc0325533 100644
--- a/addons/mrp/i18n/mrp.pot
+++ b/addons/mrp/i18n/mrp.pot
@@ -3882,7 +3882,7 @@ msgstr ""
 #. module: mrp
 #: code:addons/mrp/models/mrp_unbuild.py:88
 #, python-format
-msgid "You cannot delete an unbuild order if the stateis \"Done\""
+msgid "You cannot delete an unbuild order if the state is 'Done'."
 msgstr ""
 
 #. module: mrp
diff --git a/addons/mrp/models/mrp_unbuild.py b/addons/mrp/models/mrp_unbuild.py
index d8cc2bb7a90..8eeb6ef1923 100644
--- a/addons/mrp/models/mrp_unbuild.py
+++ b/addons/mrp/models/mrp_unbuild.py
@@ -85,8 +85,7 @@ class MrpUnbuild(models.Model):
     @api.multi
     def unlink(self):
         if 'done' in self.mapped('state'):
-            raise UserError(_('You cannot delete an unbuild order if the state'
-            'is "Done"'))
+            raise UserError(_("You cannot delete an unbuild order if the state is 'Done'."))
         return super(MrpUnbuild, self).unlink()
 
     @api.multi