diff --git a/themes/bartik/css/style.css b/themes/bartik/css/style.css
index f5e312c3892..a7f3d46b966 100644
--- a/themes/bartik/css/style.css
+++ b/themes/bartik/css/style.css
@@ -563,6 +563,7 @@ h1#page-title,
 }
 #comments .comment {
   margin-bottom: 20px;
+  position: relative;
 }
 #comments .attribution {
   float: left; /* LTR */