diff --git a/apps/api/v1/lib/validations/booking.ts b/apps/api/v1/lib/validations/booking.ts
index 202c8f3c9db9ff..6e5c99c743d6cb 100644
--- a/apps/api/v1/lib/validations/booking.ts
+++ b/apps/api/v1/lib/validations/booking.ts
@@ -43,7 +43,7 @@ export const bookingCancelSchema = z.object({
   id: z.number(),
   allRemainingBookings: z.boolean().optional(),
   cancelSubsequentBookings: z.boolean().optional(),
-  cancellationReason: z.string().optional().default("Not Provided"),
+  cancellationReason: z.string().min(1).optional(),
   seatReferenceUid: z.string().optional(),
   cancelledBy: z.string().email({ message: "Invalid email" }).optional(),
   internalNote: z