diff --git a/mozilla/editor/libeditor/base/crashtests/402172-1.html b/mozilla/editor/libeditor/base/crashtests/402172-1.html
new file mode 100644
index 00000000000..4022523fa07
--- /dev/null
+++ b/mozilla/editor/libeditor/base/crashtests/402172-1.html
@@ -0,0 +1,23 @@
+<html>
+<head>
+<script>
+
+function boom()
+{
+  document.getElementById("div").contentEditable = "true";
+  document.getElementById("div").focus();
+  document.getElementById("div").contentEditable = "false";
+  
+  document.getElementById("table").contentEditable = "true";
+}
+
+</script>
+</head>
+
+<body onload="boom();">
+
+<table id="table"><td></td></table><div id="div"></div>
+
+</body>
+
+</html>
diff --git a/mozilla/editor/libeditor/base/crashtests/crashtests.list b/mozilla/editor/libeditor/base/crashtests/crashtests.list
index 48082908f77..8affe85b823 100644
--- a/mozilla/editor/libeditor/base/crashtests/crashtests.list
+++ b/mozilla/editor/libeditor/base/crashtests/crashtests.list
@@ -1 +1,2 @@
+load 402172-1.html
 load 407256-1.html
