diff --git a/gfx/layers/apz/reftests/async-scrollbar-1-vh-ref.html b/gfx/layers/apz/reftests/async-scrollbar-1-vh-ref.html
index 5ed970f7644d..564697b37e63 100644
--- a/gfx/layers/apz/reftests/async-scrollbar-1-vh-ref.html
+++ b/gfx/layers/apz/reftests/async-scrollbar-1-vh-ref.html
@@ -2,7 +2,7 @@
 <html class="reftest-wait"><head>
 <meta name="viewport" content="width=device-width">
 </head>
-<body onload="scrollTo(450,10000); document.documentElement.classList.remove('reftest-wait')">
+<body onload="scrollTo(450,8000); document.documentElement.classList.remove('reftest-wait')">
 <div style="width: 9000px; height: 20000px; background: white;"></div>
 </body>
 </html>
diff --git a/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl-ref.html b/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl-ref.html
index d930b3a22a28..78cb0332cddd 100644
--- a/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl-ref.html
+++ b/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl-ref.html
@@ -3,7 +3,7 @@
 <meta name="viewport" content="width=device-width">
 <style> html { direction: rtl; } </style>
 </head>
-<body onload="scrollTo(-450,10000); document.documentElement.classList.remove('reftest-wait')">
+<body onload="scrollTo(-450,8000); document.documentElement.classList.remove('reftest-wait')">
 <div style="width: 9000px; height: 20000px; background: white;"></div>
 </body>
 </html>
diff --git a/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl.html b/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl.html
index 5a7ae977d86c..397d1cf9bc58 100644
--- a/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl.html
+++ b/gfx/layers/apz/reftests/async-scrollbar-1-vh-rtl.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html class="reftest-wait"
       reftest-async-scroll
-      reftest-async-scroll-x="-440" reftest-async-scroll-y="9999"><head>
+      reftest-async-scroll-x="-440" reftest-async-scroll-y="7999"><head>
 <meta name="viewport" content="width=device-width">
 <style> html { direction: rtl; } </style>
 </head>
diff --git a/gfx/layers/apz/reftests/async-scrollbar-1-vh.html b/gfx/layers/apz/reftests/async-scrollbar-1-vh.html
index 0e5dbd42e0a6..a1d1527ddc3b 100644
--- a/gfx/layers/apz/reftests/async-scrollbar-1-vh.html
+++ b/gfx/layers/apz/reftests/async-scrollbar-1-vh.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html class="reftest-wait"
       reftest-async-scroll
-      reftest-async-scroll-x="449" reftest-async-scroll-y="9999"><head>
+      reftest-async-scroll-x="449" reftest-async-scroll-y="7999"><head>
 <meta name="viewport" content="width=device-width">
 </head>
 <!-- Doing scrollTo(1,1) is to activate the left/up arrows in the scrollbars
