diff --git a/src/js/generateGenetics.js b/src/js/generateGenetics.js
index 1a9bdaf1265015de31dbb3efb9d3d22b2e74172b..16af44cf41df7865e380fe974f7bddb32fe6d3e2 100644
--- a/src/js/generateGenetics.js
+++ b/src/js/generateGenetics.js
@@ -1054,11 +1054,11 @@ globalThis.generateGenetics = (function() {
 		}
 		
 		// breeding
-		if (mother.advancedGeneticModification.breedingFreak === 1) {
+		if (mother.advancedGeneticModification.uterineHypersensitivity === 1) {
 			if (sex === "XX") {
-				advancedGeneticModification.breedingFreak = 1;
+				advancedGeneticModification.uterineHypersensitivity = 1;
 			} else {
-				advancedGeneticModification.breedingFreak = 0;
+				advancedGeneticModification.uterineHypersensitivity = 0;
 			}
 		}