diff --git a/src/NoFrixion.MoneyMoov/Models/Payouts/Payout.cs b/src/NoFrixion.MoneyMoov/Models/Payouts/Payout.cs
index 660a1dda..346035c0 100755
--- a/src/NoFrixion.MoneyMoov/Models/Payouts/Payout.cs
+++ b/src/NoFrixion.MoneyMoov/Models/Payouts/Payout.cs
@@ -309,7 +309,7 @@ public string GetApprovalHash()
                 Math.Round(Amount, 2).ToString() +
                 Destination.GetApprovalHash() +
                 Status.ToString() +
-                Scheduled.ToString() +
+                Scheduled.GetValueOrDefault().ToString() +
                 ScheduleDate?.ToString("o");
 
             return HashHelper.CreateHash(input);