diff --git a/layout/xul/base/src/crashtests/374102-1.xul b/layout/xul/base/src/crashtests/374102-1.xul
new file mode 100644
index 000000000000..7e85f0d21cae
--- /dev/null
+++ b/layout/xul/base/src/crashtests/374102-1.xul
@@ -0,0 +1,5 @@
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+<tabpanels>
+<treechildren style="display: -moz-deck;"/>
+</tabpanels>
+</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 724471414aed..6e819977a26d 100644
--- a/layout/xul/base/src/crashtests/crashtests.list
+++ b/layout/xul/base/src/crashtests/crashtests.list
@@ -24,6 +24,7 @@ load 346281-1.xul
 load 360642-1.xul
 load 366112-1.xul
 load 369942-1.xhtml
+load 374102-1.xul
 load 377592-1.svg
 load 382746-1.xul
 load 382899-1.xul