diff --git a/src/services/institutionService.ts b/src/services/institutionService.ts
index 3bcc7cb6..9bff43ad 100644
--- a/src/services/institutionService.ts
+++ b/src/services/institutionService.ts
@@ -66,9 +66,10 @@ export class InstitutionService {
   }
 
   async list_for_billing_request(
+    identity: string,
     requestParameters: InstitutionListForBillingRequestRequest
   ): Promise<InstitutionListResponse> {
-    const urlParameters = [];
+    const urlParameters = [{ key: 'identity', value: identity }];
     const requestParams = {
       path: '/billing_requests/:identity/institutions',
       method: 'get',