diff --git a/browser/themes/gnomestripe/browser/feeds/subscribe.css b/browser/themes/gnomestripe/browser/feeds/subscribe.css
index d668707b1f1..a7fcf14bfa1 100644
--- a/browser/themes/gnomestripe/browser/feeds/subscribe.css
+++ b/browser/themes/gnomestripe/browser/feeds/subscribe.css
@@ -151,6 +151,8 @@ a[href] img {
   -moz-margin-end: 0;
   margin-top: 0;
   margin-bottom: 0;
+  max-width: 300px;
+  max-height: 150px;
 }
 
 .feedEntryContent {