diff --git a/addons/coupon/models/coupon_program.py b/addons/coupon/models/coupon_program.py
index 4098306732a..66f24622c79 100644
--- a/addons/coupon/models/coupon_program.py
+++ b/addons/coupon/models/coupon_program.py
@@ -155,7 +155,7 @@ class CouponProgram(models.Model):
             })
         return generated_coupons
 
-    def get_number_usage(self):
+    def get_total_order_count(self):
         '''This returns the total number of usage of this program.'''
         self.ensure_one()
         return 0
diff --git a/addons/pos_coupon/models/coupon_program.py b/addons/pos_coupon/models/coupon_program.py
index aeeb5c003f6..98cffdc29f5 100644
--- a/addons/pos_coupon/models/coupon_program.py
+++ b/addons/pos_coupon/models/coupon_program.py
@@ -79,6 +79,6 @@ class CouponProgram(models.Model):
             domain = ast.literal_eval(program.rule_partners_domain) if program.rule_partners_domain else []
             program.valid_partner_ids = self.env["res.partner"].search(domain).ids
 
-    def get_number_usage(self):
-        res = super(CouponProgram, self).get_number_usage()
+    def get_total_order_count(self):
+        res = super(CouponProgram, self).get_total_order_count()
         return res + self.pos_order_count
diff --git a/addons/sale_coupon/models/coupon_program.py b/addons/sale_coupon/models/coupon_program.py
index f127ff04b18..4054841c467 100644
--- a/addons/sale_coupon/models/coupon_program.py
+++ b/addons/sale_coupon/models/coupon_program.py
@@ -28,7 +28,7 @@ class CouponProgram(models.Model):
 
     def _check_promo_code(self, order, coupon_code):
         message = {}
-        if self.maximum_use_number != 0 and self.order_count >= self.maximum_use_number:
+        if self.maximum_use_number != 0 and self.get_total_order_count() >= self.maximum_use_number:
             message = {'error': _('Promo code %s has been expired.') % (coupon_code)}
         elif not self._filter_on_mimimum_amount(order):
             message = {'error': _(
@@ -100,7 +100,7 @@ class CouponProgram(models.Model):
         return self.filtered(lambda program: program.promo_code_usage == 'code_needed' and program.promo_code != order.promo_code)
 
     def _filter_unexpired_programs(self, order):
-        return self.filtered(lambda program: program.maximum_use_number == 0 or program.order_count <= program.maximum_use_number)
+        return self.filtered(lambda program: program.maximum_use_number == 0 or program.get_total_order_count() <= program.maximum_use_number)
 
     def _filter_programs_on_partners(self, order):
         return self.filtered(lambda program: program._is_valid_partner(order.partner_id))
@@ -193,6 +193,6 @@ class CouponProgram(models.Model):
         # remove least interesting programs
         return self - (programs - most_interesting_program)
 
-    def get_number_usage(self):
-        res = super(CouponProgram, self).get_number_usage()
+    def get_total_order_count(self):
+        res = super(CouponProgram, self).get_total_order_count()
         return res + self.order_count