diff --git a/Static-filter-syntax.md b/Static-filter-syntax.md
index 4935415..d46d0b4 100644
--- a/Static-filter-syntax.md
+++ b/Static-filter-syntax.md
@@ -9,6 +9,7 @@ However uBO does not support some very specific cases, and also adds its own ext
     - [Static extended filtering](#static-extended-filtering)
         - [Entity](#entity)
         - [Cosmetic filters](#cosmetic-filters)
+            - [Procedural cosmetic filters](https://github.com/gorhill/uBlock/wiki/Procedural-cosmetic-filters)
         - [HTML filters](#html-filters)
         - [Scriptlet injection](#scriptlet-injection)