diff --git a/src/js/wombJS.js b/src/js/wombJS.js
index b7b80ef50774fd69ce89f8091533b2dcd5f67144..d93f3e54adee0b16846f4df00e05ebc1053cf661 100644
--- a/src/js/wombJS.js
+++ b/src/js/wombJS.js
@@ -374,15 +374,19 @@ window.WombGetVolume = function(actor) { // most legacy code from pregJS.tw with
 };
 
 window.FetusGetPrediction = function (actor, age) {
+	let vol = 0.1;
 	if (actor.pregData.sizeType === 0) {
-		return getVolByLen(actor, age);
+		vol = getVolByLen(actor, age);
 	} else if (actor.pregData.sizeType === 1) {
-		return getVolByWeight(actor, age);
+		vol = getVolByWeight(actor, age);
 	} else if (actor.pregData.sizeType === 2) {
-		return getVolByRaw(actor, age);
-	} else {
-		return 0;
-	}
+		vol =  getVolByRaw(actor, age);
+	} 
+
+	if (vol === 0)
+		vol = 0.1;
+	
+	return vol;
 
 	function getCurData(actor, age) {
 		let i = 0;