diff --git a/apps/payment/models.py b/apps/payment/models.py
index 21e6171f..761021bc 100644
--- a/apps/payment/models.py
+++ b/apps/payment/models.py
@@ -193,8 +193,9 @@ class CoursePayment(Payment):
         verbose_name_plural = 'Платежи за курсы'
 
     def save(self, *args, **kwargs):
-        amount_data = Payment.calc_amount(course_payment=self)
-        self.amount = amount_data.get('amount')
+        if self.status is None:
+            amount_data = Payment.calc_amount(course_payment=self)
+            self.amount = amount_data.get('amount')
         super().save(*args, **kwargs)
         author_balance = getattr(self, 'authorbalance', None)
         if not author_balance:
@@ -226,8 +227,9 @@ class SchoolPayment(Payment):
         return days
 
     def save(self, *args, **kwargs):
-        amount_data = Payment.calc_amount(school_payment=self)
-        self.amount = amount_data.get('amount')
+        if self.status is None:
+            amount_data = Payment.calc_amount(school_payment=self)
+            self.amount = amount_data.get('amount')
         super().save(*args, **kwargs)
 
     @property