diff --git a/src/player/js/PlayerState.js b/src/player/js/PlayerState.js
index c555ba67c2a3f734de1a5c7fd85ea7735c37aaef..283e528bb64f2a43801d16b2c9a76c0281e99d1e 100644
--- a/src/player/js/PlayerState.js
+++ b/src/player/js/PlayerState.js
@@ -1685,6 +1685,10 @@ App.Entity.PlayerState = class PlayerState {
 			/** slave can only ever birth girls */
 			girlsOnly: 0
 		};
+		this.advancedGeneticModifications = {
+			/** Pleasurable pregnancy and orgasmic birth. Wider hips, looser and wetter vagina. High pregadaptation and low birth damage. */
+			uterineHypersensitivity: 0,
+		};
 		/** Counts various thing you have done in */
 		this.counter = new App.Entity.PlayerActionsCountersState();
 		/** Values provided by players */