diff --git a/layout/xul/base/src/crashtests/322786-1.xul b/layout/xul/base/src/crashtests/322786-1.xul
new file mode 100644
index 00000000000..79bb092c4b9
--- /dev/null
+++ b/layout/xul/base/src/crashtests/322786-1.xul
@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <foo style="display: inline;">
+    <scrollbox/>
+  </foo>
+</window>
\ No newline at end of file
diff --git a/layout/xul/base/src/crashtests/crashtests.list b/layout/xul/base/src/crashtests/crashtests.list
index 07f2780dd83..8a7496d452f 100644
--- a/layout/xul/base/src/crashtests/crashtests.list
+++ b/layout/xul/base/src/crashtests/crashtests.list
@@ -1,4 +1,5 @@
 load 311457-1.html
+load 322786-1.xul
 load 327776-1.html
 load 329407-1.xml
 load 344228-1.xul