diff --git a/src/scripts/interfaces/Train.ts b/src/scripts/interfaces/Train.ts
index 8c46386..b4e4dfb 100644
--- a/src/scripts/interfaces/Train.ts
+++ b/src/scripts/interfaces/Train.ts
@@ -12,7 +12,7 @@ export default interface Train {
   driverId: number;
   trainNo: number;
   driverName: string;
-  driverLevel?: number;
+  driverLevel: number;
   currentStationName: string;
   currentStationHash: string;
   locoURL: string;