diff --git a/tests/Composer/Test/InstalledVersionsTest.php b/tests/Composer/Test/InstalledVersionsTest.php
index 5bb3bf481..7896548e2 100644
--- a/tests/Composer/Test/InstalledVersionsTest.php
+++ b/tests/Composer/Test/InstalledVersionsTest.php
@@ -191,8 +191,8 @@ class InstalledVersionsTest extends TestCase
                 '1.10.x-dev',
             ),
             'reference' => 'sourceref-by-default',
-            'dev-requirement' => true,
             'name' => '__root__',
+            'dev' => true,
         ), InstalledVersions::getRootPackage());
     }