diff --git a/css-nesting-1/Overview.bs b/css-nesting-1/Overview.bs
index 1c0722c526f..9db86af0c53 100644
--- a/css-nesting-1/Overview.bs
+++ b/css-nesting-1/Overview.bs
@@ -1027,7 +1027,7 @@ Nesting Selector: the ''&'' selector {#nest-selector}
 
 		<pre class=lang-css>
 		.a1, .a2, .a3 {
-			.b1, .b3, .b3 {
+			.b1, .b2, .b3 {
 				.c1, .c2, .c3 {
 					...;
 				}