diff --git a/src/wp-admin/options-discussion.php b/src/wp-admin/options-discussion.php
index 2e3f83189c..5bb1bed113 100644
--- a/src/wp-admin/options-discussion.php
+++ b/src/wp-admin/options-discussion.php
@@ -281,6 +281,7 @@ $avatar_defaults = array(
 	'wavatar'          => __( 'Wavatar (Generated)' ),
 	'monsterid'        => __( 'MonsterID (Generated)' ),
 	'retro'            => __( 'Retro (Generated)' ),
+	'robohash'         => __( 'RoboHash (Generated)' ),
 );
 /**
  * Filters the default avatars.