diff --git a/content/codeberg-pages/advanced-usage.md b/content/codeberg-pages/advanced-usage.md
index 461a1dd..c5f9596 100644
--- a/content/codeberg-pages/advanced-usage.md
+++ b/content/codeberg-pages/advanced-usage.md
@@ -63,4 +63,10 @@ Redirects every path under `/articles` to `/posts` while keeping the path.
 /articles/*  /posts/:splat  302
 ```
 
+{% admonition "Warning" %}
+
+`:splat` should always be the last element of the path, so something like `/*/ /:splat.html` is not a valid rule.
+
+{% endadmonition %}
+
 Example: `/articles/2022/10/12/post-1/` → `/posts/2022/10/12/post-1/`