diff --git a/app/ServiceProvider/AuthenticationProvider.php b/app/ServiceProvider/AuthenticationProvider.php
index c2dad0e6f..a3dc7e1a3 100644
--- a/app/ServiceProvider/AuthenticationProvider.php
+++ b/app/ServiceProvider/AuthenticationProvider.php
@@ -136,7 +136,7 @@ class AuthenticationProvider implements ServiceProviderInterface
         $acl->add('BoardViewController', 'readonly', Role::APP_PUBLIC);
         $acl->add('ICalendarController', '*', Role::APP_PUBLIC);
         $acl->add('FeedController', '*', Role::APP_PUBLIC);
-        $acl->add('AvatarFileController', 'show', Role::APP_PUBLIC);
+        $acl->add('AvatarFileController', array('show', 'image'), Role::APP_PUBLIC);
 
         $acl->add('ConfigController', '*', Role::APP_ADMIN);
         $acl->add('TagController', '*', Role::APP_ADMIN);