diff --git a/asdf.lisp b/asdf.lisp
index 3c5dbbd..ad97554 100644
--- a/asdf.lisp
+++ b/asdf.lisp
@@ -438,7 +438,7 @@ and NIL NAME and TYPE components" ;;; what about VERSION???
   #+cmu
   (cdr (assoc (intern x :keyword) ext:*environment-list*))
   #+lispworks
-  (lispworks:environment-xiable x)
+  (lispworks:environment-variable x)
   #+allegro
   (sys:getenv x)
   #+gcl