diff --git a/wv-input.rkt b/wv-input.rkt
index 253f17e..3725845 100644
--- a/wv-input.rkt
+++ b/wv-input.rkt
@@ -38,7 +38,7 @@
          (define/public (on-change! callback-func)
            (send window bind! element-id 'input
                  (λ (el evt data)
-                   (callback-func (get)))))
+                   (callback-func (send this get)))))
          )
        )
      )