diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
index 78468a5b7e3df..d417357cf32a0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
@@ -34,6 +34,10 @@ public function isEnabled()
             return false;
         }
 
+        if (!class_exists('Symfony\Component\Process\Process')) {
+            return false;
+        }
+
         return parent::isEnabled();
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index 9983848d7bf0b..e68290ec1b75e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -48,7 +48,8 @@
         "symfony/finder": "For using the translation loader and cache warmer",
         "symfony/form": "For using forms",
         "symfony/validator": "For using validation",
-        "symfony/serializer": "For using the serializer service"
+        "symfony/serializer": "For using the serializer service",
+        "symfony/process": "For using the server:run command"
     },
     "autoload": {
         "psr-0": { "Symfony\\Bundle\\FrameworkBundle\\": "" },