diff --git a/best_practices/security.rst b/best_practices/security.rst
index cf53ee2d405..a78f8327196 100644
--- a/best_practices/security.rst
+++ b/best_practices/security.rst
@@ -181,7 +181,7 @@ to the ``Post`` entity that checks if a given user is its author::
          */
         public function isAuthor(User $user = null)
         {
-            return $user && $user->getEmail() == $this->getAuthorEmail();
+            return $user && $user->getEmail() === $this->getAuthorEmail();
         }
     }