diff --git a/Wiki/RegEx conversions.md b/Wiki/RegEx conversions.md
index c2186732d..1d3208a87 100644
--- a/Wiki/RegEx conversions.md	
+++ b/Wiki/RegEx conversions.md	
@@ -4,6 +4,9 @@
 ### Extension emotes (12th of February 2021)
 `! ([a-zA-Z0-9]{1,})( .*)?$` → `! ——\1\2——\nwww.twitch.tv##button[data-tooltip-type=emote][data-name=\1]`
 
+## Add `?` to `:-abp-` entries that lack them (18th of November 2021)
+`([a-z])##([#.]?[a-z_].*:-abp-)` → `\1#?#\2`
+
 ## Anti-PPG List
 ### Standard (20th of February 2021; not in active use currently)
 `! (.*)` → `artstation.com#?#.gallery-grid-item:-abp-contains(\1)\nknowyourmeme.com#?#.c.rel:-abp-contains(\1)\nosu.ppy.sh#?#.beatmapsets__item:-abp-contains(\1)\npinterest.*#?#div[class*=_brioPin]:-abp-contains(\1)\npixiv.net#?#div[data-gtm-recommend-zone=discovery] > div:-abp-has(> figure[style] > figcaption  > ul:-abp-contains(\1))\npixiv.net#?#.works-item:-abp-has(img[alt*="\1"])\npixiv.net#?#li:-abp-has(a[href*="/artworks/"] img[alt*="\1"])\nplay.google.com#?#div:-abp-has(> c-wiz[autoupdate]):-abp-has(a[href^="/store/"]):-abp-contains(\1)\nreddit.com#?#.Comment,.Post,.thing,.entry:-abp-contains(\1)\nrule34.xxx,gelbooru.com,booru.org,rule34.paheal.net,sankakucomplex.com,tbib.org,xbooru.com,rule34hentai.net,megabooru.com,hard55.com,zombooru.com,zumki.ru,kusubooru.com,tentaclerape.net,wh40kart.im#?#.thumb:-abp-has(img[title*="\1"])\ntumblr.com#?#.post:-abp-contains(\1)\ntwitch.tv#?#div[class$=message]:not(.tw-inline):-abp-contains(\1)\ntwitter.com#?#article:-abp-contains(\1)\nwww.youtube.com#?##dismissable:-abp-contains(\1)\nkonachan.com,yande.re,hypnohub.net,lolibooru.moe#?##post-list-posts > li:-abp-has(img[title*="\1"])\ne621.net,donmai.us,allthefallen.moe#?#article[data-tags*="\1"]\nm.youtube.com#?#.compact-media-item:-abp-contains(\1)\nyoutubekids.com#?#.ytk-item-section-renderer[id^=ytk-compact-video-renderer-],#related > ytk-compact-video-renderer:-abp-contains(\1)`