diff --git a/lib/getTrainDelayStatus.ts b/lib/getTrainDelayStatus.ts
index 5dd722f..af7e163 100644
--- a/lib/getTrainDelayStatus.ts
+++ b/lib/getTrainDelayStatus.ts
@@ -1,7 +1,7 @@
 type getTrainDelayStatus = (
-  current: { delay: string; Pos: string },
+  current: { delay: number | "入線" | string; Pos: string },
   Station_JP: string
-) => string;
+) => string | number;
 export const getTrainDelayStatus: getTrainDelayStatus = (
   current,
   Station_JP
@@ -17,7 +17,7 @@ export const getTrainDelayStatus: getTrainDelayStatus = (
       }
     case Number.isNaN(delay):
       return delay;
-    case delay === "0":
+    case delay === 0:
       return "定刻通り";
     default:
       return delay + "分遅れ";