diff --git a/src/controllers/branch-controller.ts b/src/controllers/branch-controller.ts
index 0c6f994..d9dcda9 100644
--- a/src/controllers/branch-controller.ts
+++ b/src/controllers/branch-controller.ts
@@ -35,10 +35,10 @@ type BranchCreate = {
   address: string;
   zipCode: string;
   email: string;
-  contactName: string;
+  contactName?: string | null;
   contact: string | string[];
   telephoneNo: string;
-  lineId: string;
+  lineId?: string | null;
   longitude: string;
   latitude: string;