diff --git a/src/js/generateGenetics.js b/src/js/generateGenetics.js
index 4b618f43224f3e48bdfc4c7371404d88428dd4f1..52c52af71f3ec0034457733a0e8f63b20a89dcb8 100644
--- a/src/js/generateGenetics.js
+++ b/src/js/generateGenetics.js
@@ -114,7 +114,7 @@ window.generateGenetics = (function() {
 		if (mother.geneticQuirks.girlsOnly === 2) {
 			gender = "XX";
 		} else if (V.seeDicksAffectsPregnancy === 1) {
-			gender = Math.floor(Math.random() * 100) < V.seeDicks ? "XY" : "XX";
+			gender = jsRandom(0, 99) < V.seeDicks ? "XY" : "XX";
 		} else if (V.adamPrinciple === 1) {
 			if (father !== 0) {
 				if (father.genes === "XX" && mother.genes === "XX") {