diff --git a/test/unit/dom-if.html b/test/unit/dom-if.html
index fc98e3a221..33e8d80e21 100644
--- a/test/unit/dom-if.html
+++ b/test/unit/dom-if.html
@@ -84,7 +84,7 @@
     suite('hybrid dom-if', function() {
 
       test('parent is parent of <dom-if>', function() {
-        var stamped = Array.from(document.querySelectorAll('[hybrid-stamped]'));
+        var stamped = [].slice.call(document.querySelectorAll('[hybrid-stamped]'));
         assert.equal(stamped.length, 1);
         assert.equal(stamped[0].parentNode, document.body);
       });
@@ -95,12 +95,12 @@
         Polymer.dom(document.body).removeChild(wrapper);
         CustomElements.takeRecords();
         domIf.render();
-        var stamped = Array.from(document.querySelectorAll('[hybrid-stamped]'));
+        var stamped = [].slice.call(document.querySelectorAll('[hybrid-stamped]'));
         assert.equal(stamped.length, 0);
         Polymer.dom(removalContainer).appendChild(wrapper);
         CustomElements.takeRecords();
         setTimeout(function() {
-          stamped = Array.from(document.querySelectorAll('[hybrid-stamped]'));
+          stamped = [].slice.call(document.querySelectorAll('[hybrid-stamped]'));
           assert.equal(stamped.length, 1);
           assert.equal(stamped[0].parentNode, removalContainer);
           done();
@@ -110,7 +110,7 @@
       test('children removed correctly', function() {
         hybridDomIf.if = false;
         hybridDomIf.render();
-        var stamped = Array.from(document.querySelectorAll('[hybrid-stamped]'));
+        var stamped = [].slice.call(document.querySelectorAll('[hybrid-stamped]'));
         assert.equal(stamped.length, 0);
       });