diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 517e44e51..c38a205e9 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -54,6 +54,8 @@ class RootPackageLoader extends ArrayLoader
             }
 
             $config['version'] = $version;
+        } else {
+            $version = $config['version'];
         }
 
         $package = parent::load($config);