diff --git a/wv-element.rkt b/wv-element.rkt
index 0b610a8..2e9af0a 100644
--- a/wv-element.rkt
+++ b/wv-element.rkt
@@ -49,13 +49,13 @@
     (define/public (display . d)
       (when (not (null? d))
         (let ((d* (string->symbol (format "~a" (car d)))))
-          (webview-set-style! wv element-id 'display d*)))
+          (webview-set-style! wv element-id (list 'display d*))))
       (webview-get-style wv element-id 'display))
 
     (define/public (visibility . v)
       (when (not (null? v))
           (let ((v* (string->symbol (format "~a" (car v)))))
-            (webview-set-style! wv element-id 'visibility v*)))
+            (webview-set-style! wv element-id (list 'visibility v*))))
       (webview-get-style wv element-id 'visibility))
 
     (define/public (set-style! styles)