diff --git a/src/Composer/Repository/RepositoryManager.php b/src/Composer/Repository/RepositoryManager.php
index 1a9054f14..83352cf2f 100644
--- a/src/Composer/Repository/RepositoryManager.php
+++ b/src/Composer/Repository/RepositoryManager.php
@@ -89,7 +89,7 @@ class RepositoryManager
      * Returns a new repository for a specific installation type.
      *
      * @param  string                    $type   repository type
-     * @param  string                    $config repository configuration
+     * @param  array                     $config repository configuration
      * @return RepositoryInterface
      * @throws \InvalidArgumentException if repository for provided type is not registered
      */