diff --git a/index.bs b/index.bs
index 63795259..ea74dbe2 100644
--- a/index.bs
+++ b/index.bs
@@ -836,7 +836,7 @@ Parsing a <code>sizes</code> Attribute</h4>
 
 		<li>
 			<i title>Consume</i>: If <var>reached eof</var> is true,
-			return ''300px'' and abort these steps.
+			return ''100%'' and abort these steps.
 			Otherwise, <a spec=css-syntax>consume a component value</a> and let <var>component value</var> be the returned value. [[!CSS3SYN]]
 
 		<li>
diff --git a/index.html b/index.html
index f2ee2033..a1f4e2fe 100644
--- a/index.html
+++ b/index.html
@@ -1385,7 +1385,7 @@ <h4 class="heading settled heading" data-level=3.1.4 id=parse-sizes-attr><span c
 
 		<li>
 			<i title="">Consume</i>: If <var>reached eof</var> is true,
-			return <span class=css data-link-type=maybe title=300px>300px</span> and abort these steps.
+			return <span class=css data-link-type=maybe title=100%>100%</span> and abort these steps.
 			Otherwise, <a data-link-spec=css-syntax data-link-type=dfn href=http://dev.w3.org/csswg/css-syntax-3/#consume-a-component-value0 title="consume a component value">consume a component value</a> and let <var>component value</var> be the returned value. <a data-biblio-type=normative data-link-type=biblio href=#css3syn title=css3syn>[CSS3SYN]</a>
 
 		<li>