diff --git a/clightning/clightning.go b/clightning/clightning.go
index 3e4bb936..7305843c 100644
--- a/clightning/clightning.go
+++ b/clightning/clightning.go
@@ -673,8 +673,8 @@ func (cl *ClightningClient) ProbePayment(scid string, amountMsat uint64) (bool,
 		if !ok {
 			return false, "", fmt.Errorf("WaitSendPay() %w", err)
 		}
-		faiCodeWireIncorrectOrUnknownPaymentDetails := 203
-		if pe.RpcError.Code != faiCodeWireIncorrectOrUnknownPaymentDetails {
+		failCodeWireIncorrectOrUnknownPaymentDetails := 203
+		if pe.RpcError.Code != failCodeWireIncorrectOrUnknownPaymentDetails {
 			log.Debugf("send pay would be failed. reason:%w", err)
 			return false, pe.Error(), nil
 		}