diff --git a/racket-webview.rkt b/racket-webview.rkt
index e673e5b..27d60fa 100644
--- a/racket-webview.rkt
+++ b/racket-webview.rkt
@@ -704,7 +704,7 @@
 
 
 (define/contract (webview-call-js wv js)
-  (-> wv-win? string? (or/c string? list? boolean? hash?))
+  (-> wv-win? string? (or/c string? list? boolean? hash? symbol?))
   (let ((result (rkt-webview-call-js (wv-win-handle wv) js)))
     ;(displayln result)
     (if (webview-call-js-result? result)