diff --git a/cmds/core/build.lisp b/cmds/core/build.lisp
index 350158d..84d4532 100644
--- a/cmds/core/build.lisp
+++ b/cmds/core/build.lisp
@@ -21,7 +21,6 @@
     :description "system name"
     :short-name #\n
     :long-name "name"
-    :required t
     :key :name)
    (clingon:make-option
     :string
@@ -32,6 +31,7 @@
 
 (defun handler (cmd)
   "Handler for `build' command."
+  (format t "~A" clingon:command-arguments)
   (qob:call-script "core/build"))
 
 (defun command ()
diff --git a/scripts/build.lisp b/scripts/build.lisp
index 4838e5f..57e0f86 100644
--- a/scripts/build.lisp
+++ b/scripts/build.lisp
@@ -9,6 +9,10 @@
 
 (require 'asdf)
 
+(push (concatenate 'string (uiop:getcwd) "extern"
+                   "clingon")
+      asdf:*central-registry*)
+
 (push '*default-pathname-defaults* asdf:*central-registry*)
 (asdf:load-system "qob")
 (asdf:load-system "copy-directory")