diff --git a/js/src/dom-driver.js b/js/src/dom-driver.js
index 2b2532a..11d63a4 100644
--- a/js/src/dom-driver.js
+++ b/js/src/dom-driver.js
@@ -126,7 +126,9 @@ DOMFragment.prototype.buildNodes = function () {
   var nodes = [];
   $(self.selector).each(function (index, domNode) {
     var n = self.interpretSpec(self.fragmentSpec.sealContents);
-    n.classList.add(self.fragmentClass);
+    if ('classList' in n) {
+      n.classList.add(self.fragmentClass);
+    }
     domNode.appendChild(n);
     nodes.push(n);
   });