diff --git a/api/src/modules/auth/authentication.service.ts b/api/src/modules/auth/authentication.service.ts
index cc565951..8356038d 100644
--- a/api/src/modules/auth/authentication.service.ts
+++ b/api/src/modules/auth/authentication.service.ts
@@ -117,7 +117,7 @@ export class AuthenticationService {
       ),
     );
     const backofficeSession: BackOfficeSession = {
-      sid: uid.sync(24),
+      sid: await uid(24),
       sess: {
         cookie: {
           secure: false,