diff --git a/lisp/net/eww.el b/lisp/net/eww.el
index a96241d69f9..5e24d4fef4e 100644
--- a/lisp/net/eww.el
+++ b/lisp/net/eww.el
@@ -1132,7 +1132,7 @@ See URL `https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Input'.")
 	  (nconc eww-form (list
 			   (list 'hidden
 				 :name name
-				 :value (dom-attr dom 'value)))))))
+				 :value (or (dom-attr dom 'value) "")))))))
      (t
       (eww-form-text dom)))
     (unless (= start (point))