--- a/browser/extensions/activity-stream/css/activity-stream-linux.css
+++ b/browser/extensions/activity-stream/css/activity-stream-linux.css
@@ -596,17 +596,16 @@ section.top-sites:not(.collapsed):hover 
       -moz-context-properties: fill;
       height: 50px;
       width: 50px;
       margin: 0 auto;
       display: block; }
     .sections-list .section-empty-state .empty-state .empty-state-message {
       margin-bottom: 0;
       font-size: 13px;
-      font-weight: 300;
       color: #737373;
       text-align: center; }
 
 .topic {
   font-size: 12px;
   color: #737373;
   margin-top: 12px;
   line-height: 1.6; }

--- a/browser/extensions/activity-stream/css/activity-stream-mac.css
+++ b/browser/extensions/activity-stream/css/activity-stream-mac.css
@@ -596,17 +596,16 @@ section.top-sites:not(.collapsed):hover 
       -moz-context-properties: fill;
       height: 50px;
       width: 50px;
       margin: 0 auto;
       display: block; }
     .sections-list .section-empty-state .empty-state .empty-state-message {
       margin-bottom: 0;
       font-size: 13px;
-      font-weight: 300;
       color: #737373;
       text-align: center; }
 
 .topic {
   font-size: 12px;
   color: #737373;
   margin-top: 12px;
   line-height: 1.6; }

--- a/browser/extensions/activity-stream/css/activity-stream-windows.css
+++ b/browser/extensions/activity-stream/css/activity-stream-windows.css
@@ -596,17 +596,16 @@ section.top-sites:not(.collapsed):hover 
       -moz-context-properties: fill;
       height: 50px;
       width: 50px;
       margin: 0 auto;
       display: block; }
     .sections-list .section-empty-state .empty-state .empty-state-message {
       margin-bottom: 0;
       font-size: 13px;
-      font-weight: 300;
       color: #737373;
       text-align: center; }
 
 .topic {
   font-size: 12px;
   color: #737373;
   margin-top: 12px;
   line-height: 1.6; }