diff --git a/lib/form/form.js b/lib/form/form.js
index 0b69586b760..ee473ebe5cf 100644
--- a/lib/form/form.js
+++ b/lib/form/form.js
@@ -30,6 +30,7 @@ M.form.initShowAdvanced = function(Y, config) {
             if (this._advButtons.size() > 0) {
                 this._stateInput = new Y.NodeList(document.getElementsByName('mform_showadvanced_last'));
                 this._advButtons.on('click', this.switchState, this);
+                this._advButtons.set('type', 'button');
             }
         },
         /**