diff --git a/static/css/glossary.css b/static/css/glossary.css
index 56d9289f87..fbe429b81b 100644
--- a/static/css/glossary.css
+++ b/static/css/glossary.css
@@ -6,8 +6,11 @@
   background-image: url(../images/link.png);
   background-repeat: no-repeat;
   display: inline-block;
+  vertical-align: middle;
+  font-size: 0;
   color: transparent;
-  width: 20px;
+  width: 17px;
+  height: 17px;
   margin-left: 10px;
 }