diff --git a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
index 092c627fa9..c9f2599526 100644
--- a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
+++ b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
@@ -82,7 +82,7 @@ class SecurityDataCollector extends DataCollector
                 'token_class' => get_class($token),
                 'user' => $token->getUsername(),
                 'roles' => array_map(function (RoleInterface $role) { return $role->getRole(); }, $assignedRoles),
-                'inherited_roles' => array_map(function (RoleInterface $role) { return $role->getRole(); }, $inheritedRoles),
+                'inherited_roles' => array_unique(array_map(function (RoleInterface $role) { return $role->getRole(); }, $inheritedRoles)),
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
             );
         }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
index 0357b61206..e8f808f98e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
@@ -111,6 +111,11 @@ class SecurityDataCollectorTest extends TestCase
                 array('ROLE_ADMIN'),
                 array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
             ),
+            array(
+                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
+                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
+                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
+            ),
         );
     }
 
@@ -118,6 +123,7 @@ class SecurityDataCollectorTest extends TestCase
     {
         return new RoleHierarchy(array(
             'ROLE_ADMIN' => array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
+            'ROLE_OPERATOR' => array('ROLE_USER'),
         ));
     }