diff --git a/lighthouse-cli/test/fixtures/byte-efficiency/tester.html b/lighthouse-cli/test/fixtures/byte-efficiency/tester.html
index 3167787a13ea..d9d60a25f2dc 100644
--- a/lighthouse-cli/test/fixtures/byte-efficiency/tester.html
+++ b/lighthouse-cli/test/fixtures/byte-efficiency/tester.html
@@ -31,11 +31,17 @@
   document.head.appendChild(style);
 }
 
+// Add a long task to delay FI
+setTimeout(() => {
+  const start = Date.now();
+  while (Date.now() < start + 100) ;
+}, 2000);
+
 // Lazily load the image
 setTimeout(() => {
   const template = document.getElementById('lazily-loaded-image');
   document.body.appendChild(template.content.cloneNode(true));
-}, 6000);
+}, 7000);
 </script>
 <style>
   .onscreen {
diff --git a/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js b/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js
index 6c83ed2845b1..2da7808f89a3 100644
--- a/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js
+++ b/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js
@@ -40,9 +40,15 @@ module.exports = [
         score: '<100',
         extendedInfo: {
           value: {
-            results: {
-              length: 3,
-            },
+            results: [
+              {
+                url: /lighthouse-unoptimized.jpg$/,
+              }, {
+                url: /lighthouse-480x320.webp$/,
+              }, {
+                url: /large.svg$/,
+              },
+            ],
           },
         },
       },