diff --git a/src/main/java/eu/dnetlib/repo/manager/controllers/RepositoryController.java b/src/main/java/eu/dnetlib/repo/manager/controllers/RepositoryController.java
index 303d895..8a43f6b 100644
--- a/src/main/java/eu/dnetlib/repo/manager/controllers/RepositoryController.java
+++ b/src/main/java/eu/dnetlib/repo/manager/controllers/RepositoryController.java
@@ -107,7 +107,7 @@ public class RepositoryController {
     @RequestMapping(value = "/getRepositoryById/{id}", method = RequestMethod.GET,
             produces = MediaType.APPLICATION_JSON_VALUE)
     @ResponseBody
-    @PostAuthorize("hasAnyAuthority('SUPER_ADMINISTRATOR', 'CONTENT_PROVIDER_DASHBOARD_ADMINISTRATOR') or @authorizationService.isMemberOf(#id) or (returnObject.registeredby=='null' and hasAuthority('REGISTERED_USER'))")
+    @PostAuthorize("hasAnyAuthority('SUPER_ADMINISTRATOR', 'CONTENT_PROVIDER_DASHBOARD_ADMINISTRATOR') or @authorizationService.isMemberOf(#id) or (returnObject.registeredby==null and hasAuthority('REGISTERED_USER'))")
     public Repository getRepositoryById(@PathVariable("id") String id) throws JSONException, ResourceNotFoundException {
         Repository repo = repositoryService.getRepositoryById(id);