--- a/mercurial/templates/paper/notfound.tmpl	Fri Feb 01 15:14:05 2013 -0600
+++ b/mercurial/templates/paper/notfound.tmpl	Fri Feb 01 20:43:35 2013 +0100
@@ -7,6 +7,6 @@
 
 The specified repository "{repo|escape}" is unknown, sorry.
 
-Please go back to the <a href="{url}">main repository list page</a>.
+Please go back to the <a href="{url|urlescape}">main repository list page</a>.
 
 {footer}