diff --git a/libs/red-ui-http/src/lib/api/fileManagementController.service.ts b/libs/red-ui-http/src/lib/api/fileManagementController.service.ts
index f3528ed2a..c04cd8499 100644
--- a/libs/red-ui-http/src/lib/api/fileManagementController.service.ts
+++ b/libs/red-ui-http/src/lib/api/fileManagementController.service.ts
@@ -317,7 +317,7 @@ export class FileManagementControllerService {
         }
 
         // to determine the Accept header
-        let httpHeaderAccepts: string[] = ['*/*'];
+        const httpHeaderAccepts: string[] = ['*/*'];
         const httpHeaderAcceptSelected: string | undefined = this.configuration.selectHeaderAccept(httpHeaderAccepts);
         if (httpHeaderAcceptSelected !== undefined) {
             headers = headers.set('Accept', httpHeaderAcceptSelected);