diff --git a/userChrome.css b/userChrome.css
index 6149f87..c0d5a41 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -1,5 +1,5 @@
-@namespace xul url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
-@namespace html url("http://www.w3.org/1999/xhtml");
+@namespace xul "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+@namespace html "http://www.w3.org/1999/xhtml";
 
 @media (-moz-proton) {
   /** Default Thme - Contrast *************************************************/