diff --git a/equipment.py b/equipment.py
index 81a614e..e240490 100644
--- a/equipment.py
+++ b/equipment.py
@@ -5,7 +5,7 @@ from trytond.exceptions import UserError
 
 class OpticalEquipment(ModelSQL, ModelView):
     'Optical Equipment'
-    __name__ = "optical_equipment.equipment"
+    __name__ = 'optical_equipment.equipment'
 
     company = fields.Many2One('company.company', "Company")
     location = fields.Many2One('stock.location', "Location")