diff --git a/collects/drracket/private/unit.rkt b/collects/drracket/private/unit.rkt
index 11cc12aafe..76c0975c8a 100644
--- a/collects/drracket/private/unit.rkt
+++ b/collects/drracket/private/unit.rkt
@@ -1202,7 +1202,6 @@ module browser threading seems wrong.
                   (string-constant change-to-horizontal-alignment))]
              [callback
               (λ (a b) 
-                (car)
                 (preferences:set 'drracket:defs/ints-horizontal vertical?)
                 (set-orientation vertical?))])
         (popup-menu menu (send evt get-x) (send evt get-y)))