diff --git a/mozilla/layout/reftests/bugs/385533-1.html b/mozilla/layout/reftests/bugs/385533-1.html
new file mode 100644
index 00000000000..6e4759eebf8
--- /dev/null
+++ b/mozilla/layout/reftests/bugs/385533-1.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
diff --git a/mozilla/layout/reftests/bugs/reftest.list b/mozilla/layout/reftests/bugs/reftest.list
index d66194fbb41..29af824b377 100644
--- a/mozilla/layout/reftests/bugs/reftest.list
+++ b/mozilla/layout/reftests/bugs/reftest.list
@@ -350,6 +350,7 @@ random-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 379316-2.html 379316-2-ref.html # bug
== 384576-1.html 384576-1-ref.html
== 384762-1.html about:blank
== 384876-1.html 384876-1-ref.html
+== 385533-1.html about:blank # assertion test
== 385870-1.html 385870-1-ref.html
== 385870-2.html 385870-2-ref.html
== 386014-1a.html 386014-1-ref.html