diff --git a/src/Traits/BalanceOperation.php b/src/Traits/BalanceOperation.php
index adc3783..abbd4a5 100644
--- a/src/Traits/BalanceOperation.php
+++ b/src/Traits/BalanceOperation.php
@@ -44,7 +44,7 @@ protected function createLog($logType, $value, $notes = null): void
         $newBalance = $logType === 'dec' ? $currentBalance - $value : $currentBalance + $value;
 
         $refGen = config('pay-pocket.log_reference_generator', [
-            Str::class, 'random', [config('pay-pocket.log_reference_length', 12)]
+            Str::class, 'random', [config('pay-pocket.log_reference_length', 12)],
         ]);
         $reference = config('pay-pocket.reference_string_prefix', '');
         $reference .= isset($refGen[0], $refGen[1])