diff --git a/test/data/autoplay/autoplay_by_attr.html b/test/data/autoplay/autoplay_by_attr.html
index 41aca703cc70..2b1b5f6be5c3 100644
--- a/test/data/autoplay/autoplay_by_attr.html
+++ b/test/data/autoplay/autoplay_by_attr.html
@@ -6,14 +6,14 @@
   </head>
   <body>
 
-    <video width="320" height="240" controls autoplay onplay="playing()">
+    <video width="320" height="240" controls autoplay onplay="onPlay()">
       <source src="autoplay.mp4" type="video/mp4">
     </video>
 
     <div id='status'>Video not playing</div>
 
     <script>
-      function playing () {
+      function onPlay () {
         let status = document.getElementById('status')
         status.textContent = 'Video playing'
         window.playing = true;
@@ -21,7 +21,7 @@
           notifyWhenPlaying();
       }
       function notifyWhenPlaying() {
-        if (playing)
+        if (window.playing)
           window.domAutomationController.send("PLAYING");
         else
           window.notifyBrowser = true;
diff --git a/test/data/autoplay/autoplay_by_attr_muted.html b/test/data/autoplay/autoplay_by_attr_muted.html
index 6e5996bfb073..ae23816fec96 100644
--- a/test/data/autoplay/autoplay_by_attr_muted.html
+++ b/test/data/autoplay/autoplay_by_attr_muted.html
@@ -6,14 +6,14 @@
   </head>
   <body>
 
-    <video width="320" height="240" controls autoplay onplay="playing()" muted>
+    <video width="320" height="240" controls autoplay onplay="onPlay()" muted>
       <source src="autoplay.mp4" type="video/mp4">
     </video>
 
     <div id='status'>Video not playing</div>
 
     <script>
-      function playing () {
+      function onPlay () {
         let status = document.getElementById('status')
         status.textContent = 'Video playing'
         window.playing = true;
@@ -21,7 +21,7 @@
           notifyWhenPlaying();
       }
       function notifyWhenPlaying() {
-        if (playing)
+        if (this.playing)
           window.domAutomationController.send("PLAYING");
         else
           window.notifyBrowser = true;
diff --git a/test/data/autoplay/autoplay_by_method.html b/test/data/autoplay/autoplay_by_method.html
index c464db1c2977..0f2f0cdea61a 100644
--- a/test/data/autoplay/autoplay_by_method.html
+++ b/test/data/autoplay/autoplay_by_method.html
@@ -6,14 +6,14 @@
   </head>
   <body onload="autoplay()">
 
-    <video id="autoplay" width="320" height="240" controls onplay="playing()">
+    <video id="autoplay" width="320" height="240" controls onplay="onPlay()">
       <source src="autoplay.mp4" type="video/mp4">
     </video>
 
     <div id='status'>Video not playing</div>
 
     <script>
-      function playing () {
+      function onPlay () {
         let status = document.getElementById('status')
         status.textContent = 'Video playing'
         window.playing = true;
@@ -21,7 +21,7 @@
           notifyWhenPlaying();
       }
       function notifyWhenPlaying() {
-        if (playing)
+        if (window.playing)
           window.domAutomationController.send("PLAYING");
         else
           window.notifyBrowser = true;
diff --git a/test/data/autoplay/autoplay_by_method_muted.html b/test/data/autoplay/autoplay_by_method_muted.html
index 6dc9e67f3803..073931cd98b9 100644
--- a/test/data/autoplay/autoplay_by_method_muted.html
+++ b/test/data/autoplay/autoplay_by_method_muted.html
@@ -6,14 +6,14 @@
   </head>
   <body onload="autoplay()">
 
-    <video id="autoplay" width="320" height="240" controls onplay="playing()" muted>
+    <video id="autoplay" width="320" height="240" controls onplay="onPlay()" muted>
       <source src="autoplay.mp4" type="video/mp4">
     </video>
 
     <div id='status'>Video not playing</div>
 
     <script>
-      function playing () {
+      function onPlay () {
         let status = document.getElementById('status')
         status.textContent = 'Video playing'
         window.playing = true;
@@ -21,7 +21,7 @@
           notifyWhenPlaying();
       }
       function notifyWhenPlaying() {
-        if (playing)
+        if (window.playing)
           window.domAutomationController.send("PLAYING");
         else
           window.notifyBrowser = true;
