diff --git a/layout/mathml/crashtests/443089-1.xhtml b/layout/mathml/crashtests/443089-1.xhtml
new file mode 100644
index 000000000000..2630cea13111
--- /dev/null
+++ b/layout/mathml/crashtests/443089-1.xhtml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/layout/mathml/crashtests/crashtests.list b/layout/mathml/crashtests/crashtests.list
index b08b156520f1..9f5652206a88 100644
--- a/layout/mathml/crashtests/crashtests.list
+++ b/layout/mathml/crashtests/crashtests.list
@@ -38,3 +38,4 @@ load 405271-1.xml
load 412237-1.xml
load 413063-1.xhtml
load 420420-1.xhtml
+load 443089-1.xhtml