diff --git a/zephyr/static/styles/zephyr.css b/zephyr/static/styles/zephyr.css
index 3a2d9f2c66..ee793b74b3 100644
--- a/zephyr/static/styles/zephyr.css
+++ b/zephyr/static/styles/zephyr.css
@@ -445,6 +445,8 @@ table.floating_recipient {
 
 .message_body_gravatar {
     margin-bottom: 2px;
+    width:  30px;
+    height: 30px;
 }
 
 .userinfo_popover a {