diff --git a/app/Services/Invoice/UpdateBalance.php b/app/Services/Invoice/UpdateBalance.php
index 0aab1c2e8c69..87864fd61342 100644
--- a/app/Services/Invoice/UpdateBalance.php
+++ b/app/Services/Invoice/UpdateBalance.php
@@ -34,6 +34,9 @@ class UpdateBalance extends AbstractService
         if ($this->invoice->is_deleted) {
             return $this->invoice;
         }
+nlog("invoice id = {$this->invoice->id}");
+nlog("invoice balance = {$this->invoice->balance}");
+nlog("invoice adjustment = {$this->balance_adjustment}");
 
         $this->invoice->balance += floatval($this->balance_adjustment);
         
@@ -41,6 +44,8 @@ class UpdateBalance extends AbstractService
             $this->invoice->status_id = Invoice::STATUS_PAID;
         }
 
+nlog("final balance = {$this->invoice->balance}");
+
         return $this->invoice;
     }
 }