diff --git a/src/ol/dom/input.js b/src/ol/dom/input.js
index 4b078616c2..dfaedb61e3 100644
--- a/src/ol/dom/input.js
+++ b/src/ol/dom/input.js
@@ -164,7 +164,7 @@ ol.dom.Input.prototype.handleInputChanged_ = function() {
  * @private
  */
 ol.dom.Input.prototype.handleCheckedChanged_ = function() {
-  this.target_.checked = this.getChecked() ? 'checked' : undefined;
+  this.target_.checked = this.getChecked();
 };