diff --git a/lib/mk-ca-bundle.pl b/lib/mk-ca-bundle.pl
index cc36c7680..d16f1a41b 100755
--- a/lib/mk-ca-bundle.pl
+++ b/lib/mk-ca-bundle.pl
@@ -47,7 +47,7 @@ eval "require LWP::UserAgent";
 
 my %urls = (
   'nss' =>
-    'https://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt',
+    'https://hg.mozilla.org/projects/nss/raw-file/default/lib/ckfw/builtins/certdata.txt',
   'central' =>
     'https://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
   'aurora' =>