diff --git a/src/Composer/Installer/InstallationManager.php b/src/Composer/Installer/InstallationManager.php
index 3bf09de4f..32587a8db 100644
--- a/src/Composer/Installer/InstallationManager.php
+++ b/src/Composer/Installer/InstallationManager.php
@@ -33,7 +33,7 @@ class InstallationManager
 {
     private $installers = array();
     private $cache = array();
-    protected $vendorPath;
+    private $vendorPath;
 
     /**
      * Creates an instance of InstallationManager
@@ -197,14 +197,14 @@ class InstallationManager
         return getcwd().DIRECTORY_SEPARATOR.$this->vendorPath;
     }
 
-    protected function notifyInstall(PackageInterface $package)
+    private function notifyInstall(PackageInterface $package)
     {
         if ($package->getRepository() instanceof NotifiableRepositoryInterface) {
             $package->getRepository()->notifyInstall($package);
         }
     }
 
-    protected function antiAlias(PackageInterface $package)
+    private function antiAlias(PackageInterface $package)
     {
         if ($package instanceof AliasPackage) {
             $alias = $package;
diff --git a/tests/Composer/Test/Mock/InstallationManagerMock.php b/tests/Composer/Test/Mock/InstallationManagerMock.php
index 8f0f83008..9a7af786b 100644
--- a/tests/Composer/Test/Mock/InstallationManagerMock.php
+++ b/tests/Composer/Test/Mock/InstallationManagerMock.php
@@ -24,28 +24,19 @@ class InstallationManagerMock extends InstallationManager
     private $updated = array();
     private $uninstalled = array();
 
-    public function __construct($vendorDir = 'vendor')
-    {
-        $this->vendorPath = $vendorDir;
-    }
-
     public function install(RepositoryInterface $repo, InstallOperation $operation)
     {
-        $package = $this->antiAlias($operation->getPackage());
-        $this->installed[] = $package;
+        $this->installed[] = $operation->getPackage();
     }
 
     public function update(RepositoryInterface $repo, UpdateOperation $operation)
     {
-        $initial = $this->antiAlias($operation->getInitialPackage());
-        $target = $this->antiAlias($operation->getTargetPackage());
-        $this->updated[] = $target;
+        $this->updated[] = array($operation->getInitialPackage(), $operation->getTargetPackage());
     }
 
     public function uninstall(RepositoryInterface $repo, UninstallOperation $operation)
     {
-        $package = $this->antiAlias($operation->getPackage());
-        $this->uninstalled[] = $package;
+        $this->uninstalled[] = $operation->getPackage();
     }
 
     public function getInstalledPackages()