diff --git a/mozilla/layout/doc/layout.xml b/mozilla/layout/doc/layout.xml
index d136d2fa55d..131b507f6cc 100644
--- a/mozilla/layout/doc/layout.xml
+++ b/mozilla/layout/doc/layout.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<?XML-stylesheet href="layout.css" type="text/css"?>
+<?xml-stylesheet href="layout.css" type="text/css"?>
 <!DOCTYPE Documentation>
 
 <Documentation xmlns:html="http://www.w3.org/TR/REC-HTML40">