diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
index 483da057a3..fb92f3e768 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
@@ -28,7 +28,7 @@ class ServerRunCommand extends ContainerAwareCommand
      */
     public function isEnabled()
     {
-        if (PHP_VERSION_ID < 50400) {
+        if (version_compare(phpversion(), '5.4.0', '<')) {
             return false;
         }