diff --git a/src/Symfony/Component/Console/Command/HelpCommand.php b/src/Symfony/Component/Console/Command/HelpCommand.php
index 4cf9362419..e453f86774 100644
--- a/src/Symfony/Component/Console/Command/HelpCommand.php
+++ b/src/Symfony/Component/Console/Command/HelpCommand.php
@@ -77,6 +77,8 @@ EOF
         }
 
         if ($input->getOption('xml')) {
+            trigger_error('The --xml option was deprecated in version 2.7 and will be removed in version 3.0. Use the --format option instead.', E_USER_DEPRECATED);
+
             $input->setOption('format', 'xml');
         }
 
diff --git a/src/Symfony/Component/Console/Command/ListCommand.php b/src/Symfony/Component/Console/Command/ListCommand.php
index 58868e4706..22d8530b28 100644
--- a/src/Symfony/Component/Console/Command/ListCommand.php
+++ b/src/Symfony/Component/Console/Command/ListCommand.php
@@ -69,6 +69,8 @@ EOF
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         if ($input->getOption('xml')) {
+            trigger_error('The --xml option was deprecated in version 2.7 and will be removed in version 3.0. Use the --format option instead.', E_USER_DEPRECATED);
+
             $input->setOption('format', 'xml');
         }