Index: src/wp-admin/css/dashboard.css
===================================================================
--- src/wp-admin/css/dashboard.css	(revision 32051)
+++ src/wp-admin/css/dashboard.css	(working copy)
@@ -700,7 +700,7 @@
 	position: relative;
 }
 
-#activity-widget #the-comment-list img {
+#activity-widget #the-comment-list .avatar {
 	position: absolute;
 	top: 13px;
 }