diff --git a/app/Validation/Account/ReconciliationValidation.php b/app/Validation/Account/ReconciliationValidation.php
index 91514fc092..6bab9e8fec 100644
--- a/app/Validation/Account/ReconciliationValidation.php
+++ b/app/Validation/Account/ReconciliationValidation.php
@@ -32,8 +32,8 @@ use FireflyIII\Models\Account;
  */
 trait ReconciliationValidation
 {
-    public ?Account $destination;
-    public ?Account $source;
+    public ?Account $destination = null;
+    public ?Account $source = null;
 
     protected function validateReconciliationDestination(array $array): bool
     {