diff --git a/src/events/scheduled/seCustomSlaveDelivery.js b/src/events/scheduled/seCustomSlaveDelivery.js
index 29df28766e3cd46582f52af215c9071ddec6a1b8..80bb2a053d23fb9ce6bddb6d35c6a16e9e3392e0 100644
--- a/src/events/scheduled/seCustomSlaveDelivery.js
+++ b/src/events/scheduled/seCustomSlaveDelivery.js
@@ -226,11 +226,7 @@ App.Events.SEcustomSlaveDelivery = class SEcustomSlaveDelivery extends App.Event
 			if (V.customSlave.analVirgin === 0) {
 				delivery.anus = V.customSlave.analVirgin;
 			}
-			if (V.customSlave.voice && V.customSlave.voice !== -1) {
-				delivery.voice = V.customSlave.voice;
-			} else {
-				delivery.voice = random(0, 3);
-			}
+			delivery.voice = isNaN(V.customSlave.voice) ? random(0, 3) : V.customSlave.voice;
 			setHealth(delivery, V.customSlave.health * 80, 0, 0, 0, 0);
 			delivery.muscles = V.customSlave.muscles;
 			delivery.weight = V.customSlave.weight;