diff --git a/apps/payment/views.py b/apps/payment/views.py
index 38c376a2..dd52a73d 100644
--- a/apps/payment/views.py
+++ b/apps/payment/views.py
@@ -110,6 +110,9 @@ class SchoolBuyView(TemplateView):
                 date_end=now().date(),
                 add_days=True,
             )
+            if school_payment.amount <= 0:
+                messages.error('Выбранные дни отсутствуют в оставшемся периоде подписки')
+                return redirect(reverse_lazy('school:school'))
         else:
             school_payment = SchoolPayment.objects.create(
                 user=request.user,