diff --git a/lighthouse-core/gather/gatherers/dobetterweb/domstats.js b/lighthouse-core/gather/gatherers/dobetterweb/domstats.js
index 9778bdd24ca5..7692a305dab4 100644
--- a/lighthouse-core/gather/gatherers/dobetterweb/domstats.js
+++ b/lighthouse-core/gather/gatherers/dobetterweb/domstats.js
@@ -138,7 +138,7 @@ class DOMStats extends Gatherer {
       return (${getDOMStats.toString()}(document.documentElement));
     })()`;
     return options.driver.sendCommand('DOM.enable')
-      .then(() => options.driver.evaluateAsync(expression))
+      .then(() => options.driver.evaluateAsync(expression, {useIsolation: true}))
       .then(results => options.driver.getElementsInDocument().then(allNodes => {
         results.totalDOMNodes = allNodes.length;
         return options.driver.sendCommand('DOM.disable').then(() => results);