diff --git a/types/type.d.ts b/types/type.d.ts
index 44c4ab5..17e044f 100644
--- a/types/type.d.ts
+++ b/types/type.d.ts
@@ -14,7 +14,7 @@ declare interface MarkerData {
   latitude: number;
   longitude: number;
   id: number;
-  title: string;
+  title?: string;
   profile_image_url: string;
   car_image_url: string;
   car_seats: number;