diff --git a/maintenance_equipment_charge/__manifest__.py b/maintenance_equipment_charge/__manifest__.py
index a397db71..e3a112a0 100644
--- a/maintenance_equipment_charge/__manifest__.py
+++ b/maintenance_equipment_charge/__manifest__.py
@@ -1,6 +1,6 @@
 {
     'name': 'Equipment Charges',
-    'version': '12.0.1.0.0',
+    'version': '13.0.1.0.0',
     'author': 'Hibou Corp. <hello@hibou.io>',
     'category': 'Human Resources',
     'summary': 'Record related equipment charges.',
diff --git a/maintenance_equipment_charge/models/maintenance.py b/maintenance_equipment_charge/models/maintenance.py
index 278f8f50..b5556e7b 100644
--- a/maintenance_equipment_charge/models/maintenance.py
+++ b/maintenance_equipment_charge/models/maintenance.py
@@ -14,7 +14,6 @@ class Equipment(models.Model):
     charge_ids = fields.One2many('maintenance.equipment.charge', 'equipment_id', 'Charges', copy=False)
     charge_count = fields.Integer(string='Charges', compute='_compute_charge_count')
 
-    @api.multi
     def _compute_charge_count(self):
         for equipment in self:
             self.charge_count = len(equipment.charge_ids)