diff --git a/src/markets/specificMarkets/customSlaveMarket.js b/src/markets/specificMarkets/customSlaveMarket.js
index eb6d45e16f26ab9c0d7c940466433cec54ba6104..a3d8539bce51da6a5077f84e6577efab39277d82 100644
--- a/src/markets/specificMarkets/customSlaveMarket.js
+++ b/src/markets/specificMarkets/customSlaveMarket.js
@@ -66,19 +66,19 @@ App.Markets["Custom Slave"] = function() {
 		const select = document.createElement("select");
 		for (let i = 0; i < ages.length; i++) {
 			const high = ages[i];
-			const low = ages[i - 1] || (ages[i] - 1); // First element of array has nothing before it, obviously, so display low as one less than high.
+			const low = (ages[i - 1] + 1 ) || (ages[i] - 1); // First element of array has nothing before it, obviously, so display low as one less than high.
 			if (low < V.minimumSlaveAge) {
 				continue;
 			} else if (high > V.retirementAge) {
 				const option = document.createElement("option");
-				option.text = `${low + 1}+`;
-				option.value = low + 1;
+				option.text = `${low}+`;
+				option.value = low;
 				select.append(option);
 				break;
 			}
 
 			const option = document.createElement("option");
-			option.text = `${low + 1}-${high}`;
+			option.text = `${low}-${high}`;
 			option.value = high;
 			if (slave.age === option.value) {
 				option.selected = true;