diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
index 1ef2ed3d78..30c0688ac7 100644
--- a/src/Symfony/Component/Console/Tests/ApplicationTest.php
+++ b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -558,7 +558,7 @@ class ApplicationTest extends TestCase
             $this->assertRegExp(sprintf('/Command "%s" is not defined./', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternatives');
             $this->assertRegExp('/afoobar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "afoobar1"');
             $this->assertRegExp('/foo:bar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "foo:bar1"');
-            $this->assertNotRegExp('/foo:bar(?>!1)/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, without "foo:bar" alternative');
+            $this->assertNotRegExp('/foo:bar(?!1)/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, without "foo:bar" alternative');
         }
     }