diff --git a/css-animations-2/Overview.bs b/css-animations-2/Overview.bs
index 5e3d2f30516..785f2234380 100644
--- a/css-animations-2/Overview.bs
+++ b/css-animations-2/Overview.bs
@@ -654,7 +654,7 @@ the following effects:
 :   <dfn>none</dfn>
 ::  The animation is not associated with a [=timeline=].
 
-:   <dfn><<custom-ident>></dfn>
+:   <dfn><<dashed-ident>></dfn>
 ::  If a named [=scroll progress timeline=] or [=view progress timeline=]
     is in scope on this element,
     use the referenced timeline