diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/security/SecurityUtils.java b/libreplan-webapp/src/main/java/org/libreplan/web/security/SecurityUtils.java
index a5838748e..226eb8847 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/security/SecurityUtils.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/security/SecurityUtils.java
@@ -124,7 +124,11 @@ public final class SecurityUtils {
                     @Override
                     public Boolean execute() {
                         try {
-                            String username = getLoggedUser().getUsername();
+                            CustomUser customUser = getLoggedUser();
+                            if (customUser == null) {
+                                return false;
+                            }
+                            String username = customUser.getUsername();
                             return Registry
                                     .getOrderAuthorizationDAO()
                                     .userOrItsProfilesHaveAnyAuthorization(