diff --git a/js/medicine/surgery/assets/boobs.js b/js/medicine/surgery/assets/boobs.js
index f781ead0e07b01dabcc683946fe7781aefb1dda3..f873c09c957e949fe52de1ce365afc99fb09a9a0 100644
--- a/js/medicine/surgery/assets/boobs.js
+++ b/js/medicine/surgery/assets/boobs.js
@@ -160,7 +160,7 @@ App.Medicine.Surgery.Reactions.BoobsLoss = class extends App.Medicine.Surgery.Si
 				slave.nipples = "puffy";
 			}
 		} else if ((slave.nipples === "cute" || slave.nipples === "tiny") && (slave.boobsImplant / slave.boobs >= 0.75)) {
-			this.slave.nipples = "flat";
+			slave.nipples = "flat";
 		}
 		if (slave.boobShape !== "spherical") {
 			if (slave.boobsImplant / slave.boobs >= 0.90) {