diff --git a/DutchFilter/sections/specific.txt b/DutchFilter/sections/specific.txt
index a5b17d35749..fcd010cb2c6 100644
--- a/DutchFilter/sections/specific.txt
+++ b/DutchFilter/sections/specific.txt
@@ -4,6 +4,7 @@
 ! Good: example.org###rek; ||example.com/ads/
 ! Bad: example.org#$##rek { display: none !important; } (for instance, should be in general_extensions.txt)
 !
+knack.be##.c-header__ad
 serietotaal.nl##div[class*="banner"]
 serietotaal.nl##div[id^="ad"]
 serietotaal.nl##.rect-in-headlines