diff --git a/SpywareFilter/sections/tracking_servers_firstparty.txt b/SpywareFilter/sections/tracking_servers_firstparty.txt
index 62c0409df5e..675d77d5910 100644
--- a/SpywareFilter/sections/tracking_servers_firstparty.txt
+++ b/SpywareFilter/sections/tracking_servers_firstparty.txt
@@ -28,6 +28,8 @@
 ! Blocking piwik analytics subdomain(for DNS filtering)
 |piwik.
 !
+||excess-ga.duolingo.com^
+||excess.duolingo.com^
 ||p.softmedia.cz^
 ||analytics.sportera.fans^
 ||analytics.sen.go.kr^