diff --git a/layout/reftests/first-letter/parent-style-1-ref.html b/layout/reftests/first-letter/parent-style-1-ref.html
new file mode 100644
index 000000000000..52847e1ba391
--- /dev/null
+++ b/layout/reftests/first-letter/parent-style-1-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+<style>
+div { float: left; overflow: scroll; font-size: 50px; width: 3em; line-height: 10px }
+div::first-letter { float: left; }
+</style>
+<body>
+<div>T<span style="font-size: 10px">his is text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.</div>
+</body>
+</html>
diff --git a/layout/reftests/first-letter/parent-style-1.html b/layout/reftests/first-letter/parent-style-1.html
new file mode 100644
index 000000000000..1e5a9bdc6cc7
--- /dev/null
+++ b/layout/reftests/first-letter/parent-style-1.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+<style>
+div { float: left; overflow: scroll; font-size: 50px; width: 3em; line-height: 10px }
+div::first-letter { float: inherit; }
+</style>
+<body>
+<div>T<span style="font-size: 10px">his is text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.  Text in a div.</div>
+</body>
+</html>
diff --git a/layout/reftests/first-letter/reftest.list b/layout/reftests/first-letter/reftest.list
index 674af7c622dd..bf549edf6dc4 100644
--- a/layout/reftests/first-letter/reftest.list
+++ b/layout/reftests/first-letter/reftest.list
@@ -1,5 +1,11 @@
+# basic functionality
 == basic-1.html basic-ref.html
 == basic-2.html basic-ref.html
+
+# parent style context correct
+== parent-style-1.html parent-style-1-ref.html
+
+# others
 == nested-1a.html nested-1-ref.html
 == nested-1b.html nested-1-ref.html
 == nested-1c.html nested-1-ref.html
