diff --git a/UPGRADE.md b/UPGRADE.md
index d664bb2145..e6300b9e8e 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -26,7 +26,7 @@ you have customized your `deps` file, move the added dependencies to the
 `composer.json` file (many bundles and PHP libraries are already available as
 Composer packages -- search for them on [Packagist](http://packagist.org/)).
 
-Remove your current `vendors` directory.
+Remove your current `vendor` directory.
 
 Finally, run Composer: