diff --git a/css-text-decor-3/Overview.bs b/css-text-decor-3/Overview.bs
index f67f98d836e..92622d58cbb 100644
--- a/css-text-decor-3/Overview.bs
+++ b/css-text-decor-3/Overview.bs
@@ -861,7 +861,7 @@ Text Shadows: the 'text-shadow' property</h2>
 
 	<pre class="propdef">
 	Name: text-shadow
-	Value: none | [ <<color>>? && <<length>>{2,3} ]#
+	Value: none | [ <<color>>? && [ <<length>>{2} <<length [0,&infin;]>>? ] ]#
 	Initial: none
 	Applies to: text
 	Inherited: yes