diff --git a/packages/medusa/src/api/admin/returns/validators.ts b/packages/medusa/src/api/admin/returns/validators.ts
index 54e42ace71..1348020c20 100644
--- a/packages/medusa/src/api/admin/returns/validators.ts
+++ b/packages/medusa/src/api/admin/returns/validators.ts
@@ -29,6 +29,7 @@ export const AdminGetOrdersParams = createFindParams({
 }).merge(
   z.object({
     id: z.union([z.string(), z.array(z.string())]).optional(),
+    order_id: z.union([z.string(), z.array(z.string())]).optional(),
     status: z.union([z.string(), z.array(z.string())]).optional(),
     created_at: createOperatorMap().optional(),
     updated_at: createOperatorMap().optional(),