diff --git a/mozilla/content/base/src/nsNameSpaceManager.cpp b/mozilla/content/base/src/nsNameSpaceManager.cpp
index 45d1cc24e1a..19ec92686d3 100644
--- a/mozilla/content/base/src/nsNameSpaceManager.cpp
+++ b/mozilla/content/base/src/nsNameSpaceManager.cpp
@@ -29,7 +29,7 @@
 
 
 
-static const char kXMLNSNameSpaceURI[] = "http://www.w3.org/2000/xmlns";
+static const char kXMLNSNameSpaceURI[] = "http://www.w3.org/2000/xmlns/";
 static const char kXMLNameSpaceURI[] = "http://www.w3.org/XML/1998/namespace";
 static const char kHTMLNameSpaceURI[] = "http://www.w3.org/TR/REC-html40";  // XXX?? "urn:w3-org-ns:HTML"??
 // XXX To be removed: Bug 7834 ---