diff --git a/layout/reftests/mathml/stretchy-largeop-1-ref.html b/layout/reftests/mathml/stretchy-largeop-1-ref.html
index b65a38958f10..97c6e5eaa26e 100644
--- a/layout/reftests/mathml/stretchy-largeop-1-ref.html
+++ b/layout/reftests/mathml/stretchy-largeop-1-ref.html
@@ -41,16 +41,5 @@
         <mrow>
       </math>
     </p>
-    <p>
-      <!-- &bigotimes; included in the test to check for an assertion involving
-           the direction of the largeop pre-stretch -->
-      <math displaystyle="true">
-        <mrow>
-          <mo id="mo4">(</mo>
-          <mo>&bigotimes;</mo>
-          <mo id="mo5">)</mo>
-        <mrow>
-      </math>
-    </p>
   </body>
 </html>
diff --git a/layout/reftests/mathml/stretchy-largeop-1.html b/layout/reftests/mathml/stretchy-largeop-1.html
index bb63c8a435fb..bf807abd4ca5 100644
--- a/layout/reftests/mathml/stretchy-largeop-1.html
+++ b/layout/reftests/mathml/stretchy-largeop-1.html
@@ -66,16 +66,5 @@
         <mrow>
       </math>
     </p>
-    <p>
-      <!-- &bigotimes; included in the test to check for an assertion involving
-           the direction of the largeop pre-stretch -->
-      <math displaystyle="true">
-        <mrow>
-          <mo id="mo4">(</mo>
-          <mo>&bigotimes;</mo>
-          <mo id="mo5">)</mo>
-        <mrow>
-      </math>
-    </p>
   </body>
 </html>
diff --git a/testing/web-platform/tests/mathml/crashtests/mozilla/1092053.html b/testing/web-platform/tests/mathml/crashtests/mozilla/1092053.html
new file mode 100644
index 000000000000..51b5858b6f33
--- /dev/null
+++ b/testing/web-platform/tests/mathml/crashtests/mozilla/1092053.html
@@ -0,0 +1,20 @@
+﻿<!DOCTYPE html>
+<html>
+  <head>
+    <title>Largeop stretching</title>
+    <meta charset="utf-8"/>
+  </head>
+  <body>
+    <p>
+      <!-- &bigotimes; allows to check for an assertion involving
+           the direction of the largeop pre-stretch -->
+      <math displaystyle="true">
+        <mrow>
+          <mo id="mo4">(</mo>
+          <mo>&bigotimes;</mo>
+          <mo id="mo5">)</mo>
+        </mrow>
+      </math>
+    </p>
+  </body>
+</html>
