diff --git a/SpywareFilter/sections/tracking_servers_firstparty.txt b/SpywareFilter/sections/tracking_servers_firstparty.txt
index d435429d153..be4547152b9 100644
--- a/SpywareFilter/sections/tracking_servers_firstparty.txt
+++ b/SpywareFilter/sections/tracking_servers_firstparty.txt
@@ -25,6 +25,7 @@
 ! Blocking piwik analytics subdomain(for DNS filtering)
 |piwik.
 !
+||ads.mozilla.org^
 ||cpx.golem.de^
 ||carmen.golem.de^
 ||cfa-js.cafe24.com^