diff --git a/css-ruby-1/Overview.bs b/css-ruby-1/Overview.bs
index 896ec807a13..5ab2301389a 100644
--- a/css-ruby-1/Overview.bs
+++ b/css-ruby-1/Overview.bs
@@ -318,7 +318,7 @@ Anonymous Ruby Box Generation</h3>
 
 	<ol>
 		<li id="anon-gen-inlinize"><strong>[=Inlinify=] block-level boxes:</strong>
-			Any in-flow boxes directly contained by a
+			Any [=in-flow=] boxes directly contained by a
 			[=ruby container=],
 			[=ruby base container=],
 			[=ruby annotation container=],