diff --git a/GermanFilter/sections/replace.txt b/GermanFilter/sections/replace.txt
index 174b7360246..175d4b6bdef 100644
--- a/GermanFilter/sections/replace.txt
+++ b/GermanFilter/sections/replace.txt
@@ -2,6 +2,8 @@
 ! The content replacement rules
 !
 ! Glomex video ads - kabeleins.de,prosieben.de,prosiebenmaxx.de,ran.de,sat1.de,sat1gold.de,sixx.de,the-voice-of-germany.de,wetter.com
+! https://github.com/AdguardTeam/AdguardFilters/issues/21525
+config.player.p7s1.io/sat1-de.js$replace=/"adScheduler":\{"cobra":\{"advertiser":"[\s\S]*?_[\s\S]*?"/"adScheduler":\{"cobra":\{"advertiser":"x"/,important
 ! https://github.com/AdguardTeam/AdguardFilters/issues/21494
 config.player.p7s1.io/prosieben-de.js$replace=/"adScheduler":\{"cobra":\{"advertiser":"[\s\S]*?_[\s\S]*?"/"adScheduler":\{"cobra":\{"advertiser":"x"/,important
 ! https://github.com/AdguardTeam/AdguardFilters/issues/20595