diff --git a/CyrillicFilters/RussianFilter/sections/antiadblock.txt b/CyrillicFilters/RussianFilter/sections/antiadblock.txt
index 5a0f0c17da0..ccf3257970a 100644
--- a/CyrillicFilters/RussianFilter/sections/antiadblock.txt
+++ b/CyrillicFilters/RussianFilter/sections/antiadblock.txt
@@ -119,7 +119,7 @@ positiverecords.ru#@#.ad-google
 pikabu.ru#%#//scriptlet('abort-on-property-write', 'Ya')
 pikabu.ru$$script:contains(/\.getPropertyPriority.*=requestAnimationFrame/)
 !#if (!adguard_app_windows && !adguard_app_mac && !adguard_app_android)
-pikabu.ru#%#//scriptlet('remove-node-text', 'script', '/xhr\.setRequestHeader\([a-zA-Z0-9_]{0,3}[a-zA-Z0-9]{0,6}[hHxX]?[a-zA-Z0-9_]{1,2}[a-zA-Z0-9_]{1,3}_?[a-zA-Z0-9]?[a-zA-Z0-9_]?[RrpP]/')
+pikabu.ru#%#//scriptlet('remove-node-text', 'script', '/xhr\.setRequestHeader\([a-zA-Z0-9_]{0,4}[a-zA-Z0-9]{0,6}[hHxX]?[a-zA-Z0-9_]{1,2}[a-zA-Z0-9_]{1,3}_?[a-zA-Z0-9]?[a-zA-Z0-9_]?[RrpP]/')
 !#endif
 ! sports.ru
 sports.ru#%#//scriptlet('json-prune', 'direct rtbAuctionInfo')