diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 95e5d7e2b..8419a4863 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -17,6 +17,7 @@ use Composer\Config;
 use Composer\Factory;
 use Composer\Package\Version\VersionParser;
 use Composer\Repository\RepositoryManager;
+use Composer\Repository\Vcs\HgDriver;
 use Composer\Util\ProcessExecutor;
 
 /**