diff --git a/app/Service/DepositService.php b/app/Service/DepositService.php
index a6fd8ae..23de9e2 100644
--- a/app/Service/DepositService.php
+++ b/app/Service/DepositService.php
@@ -35,7 +35,7 @@ class DepositService
      */
     public function calculateSummary(int $markId, $start, $end): array
     {
-        $days = $start->diffInDays($end);
+        $days = $start->diffInDays($end, false);
 
         $tariffs = UniModel::model('pipi_auto_tariffs')
             ->where('model_id', $markId)