diff --git a/src/js/economyJS.js b/src/js/economyJS.js
index f60ae8286e6de1a286d5d75664cb1fa87254d75b..63f0cfc364a328dbeb68a569c8e9b14e214e5fc4 100644
--- a/src/js/economyJS.js
+++ b/src/js/economyJS.js
@@ -996,7 +996,7 @@ globalThis.getSlaveCostArray = function(s) {
 		if (V.geneticMappingUpgrade >= 1) {
 			retval.push({
 				text: "Additional dietary supplements due to genetic hyper-fertility",
-				Math.trunc(foodCost * 0.5)});
+				value: Math.trunc(foodCost * 0.5)});
 		} else {
 			retval.push({text: "Adjustment for unusual dietary deficiencies", value: Math.trunc(foodCost * 0.5)});
 		}