diff --git a/app/Booking.php b/app/Booking.php
index b1fb3b9..ed33aa1 100644
--- a/app/Booking.php
+++ b/app/Booking.php
@@ -94,7 +94,7 @@ class Booking extends Model
         $sum = 0;
 
         foreach ($this->subBookings as $subBooking) {
-          $sum += $subBooking->signedAmount();
+            $sum += $subBooking->signedAmount();
         }
 
         return $sum;