diff --git a/BaseFilter/sections/antiadblock.txt b/BaseFilter/sections/antiadblock.txt
index 3b62c59fc3c..e76d4081498 100644
--- a/BaseFilter/sections/antiadblock.txt
+++ b/BaseFilter/sections/antiadblock.txt
@@ -9374,10 +9374,6 @@ javtiful.com#%#//scriptlet("prevent-addEventListener", "DOMContentLoaded", "adsB
 !#endif
 ! https://github.com/AdguardTeam/AdguardFilters/issues/52779
 androidpolice.com#%#//scriptlet("abort-on-property-write", "ai_adb")
-! https://github.com/AdguardTeam/AdguardFilters/issues/52764
-@@||bookscool.com/*/advertisement.js
-||bookscool.com/*/adblock-checker.
-bookscool.com#%#//scriptlet("set-constant", "adblock", "1")
 ! https://github.com/AdguardTeam/AdguardFilters/issues/52725
 @@||fux.com/adblockchecker.js
 fux.com#%#//scriptlet("set-constant", "adbDetectorLoaded", "false")