diff --git a/css-anchor-position-1/Overview.bs b/css-anchor-position-1/Overview.bs
index 15bc1be55a1..99a157b78a6 100644
--- a/css-anchor-position-1/Overview.bs
+++ b/css-anchor-position-1/Overview.bs
@@ -406,7 +406,7 @@ in anchor positioning.
 	if all of the following are true:
 
 	* |possible anchor| is either an [=element=]
-		or a [=part-like pseudo-element=].
+		or a fully styleable [=tree-abiding pseudo-element=].
 
 	* |possible anchor| is in scope for |positioned el|,
 		per the effects of 'anchor-scope' on |positioned el|