diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
index 0d58c39b05..2375267777 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
@@ -94,7 +94,7 @@ class GuardAuthenticationFactory implements SecurityFactoryInterface
             // explode if they've configured the entry_point, but there is already one
             if ($config['entry_point']) {
                 throw new \LogicException(sprintf(
-                    'The guard authentication provider cannot use the "%s" entry_point because another entry point is already configured by another provider! Either remove the other provider or move the entry_point configuration as a root key under your firewall',
+                    'The guard authentication provider cannot use the "%s" entry_point because another entry point is already configured by another provider! Either remove the other provider or move the entry_point configuration as a root key under your firewall (i.e. at the same level as "guard").',
                     $config['entry_point']
                 ));
             }