diff --git a/app/models/tenure/MarketPurchase.ts b/app/models/tenure/MarketPurchase.ts
index 3ee2d26..a6ab081 100644
--- a/app/models/tenure/MarketPurchase.ts
+++ b/app/models/tenure/MarketPurchase.ts
@@ -8,7 +8,6 @@ interface MarketPurchaseParams {
   depreciatedBuildPrice: number;
   landPrice: number;
   incomeYearly: number;
-  maintenanceCostPercentage: number;
   forecastParameters: ForecastParameters;
 }