diff --git a/lib/proto/attach-form.js b/lib/proto/attach-form.js
index fa4d6af..4f6ed82 100644
--- a/lib/proto/attach-form.js
+++ b/lib/proto/attach-form.js
@@ -50,7 +50,7 @@ var formAction = function(el, event) {
     // jscs:disable disallowImplicitTypeConversion
     if (!!element.name && element.attributes !== undefined && element.tagName.toLowerCase() !== "button") {
       // jscs:enable disallowImplicitTypeConversion
-      if ((element.attributes.type !== "checkbox" && element.attributes.type !== "radio") || element.checked) {
+      if ((!element.attributes.type || element.attributes.type.value !== "checkbox" && element.attributes.type.value !== "radio") || element.checked) {
         paramObject.push({name: encodeURIComponent(element.name), value: encodeURIComponent(element.value)})
       }
     }