diff --git a/avatar.js b/avatar.js
index cfdd1894a..bf680e025 100644
--- a/avatar.js
+++ b/avatar.js
@@ -14,7 +14,8 @@ var Avatar = (function(my) {
             }
             users[jid] = id;
         }
-        var url = getGravatarUrl(users[jid] || jid);
+        var thumbUrl = getGravatarUrl(users[jid] || jid, 100);
+        var contactListUrl = getGravatarUrl(users[jid] || jid);
         var resourceJid = Strophe.getResourceFromJid(jid);
         var thumbnail = $('#participant_' + resourceJid);
         var avatar = $('#avatar_' + resourceJid);
@@ -22,25 +23,25 @@ var Avatar = (function(my) {
         // set the avatar in the settings menu if it is local user and get the
         // local video container
         if(jid === connection.emuc.myroomjid) {
-            $('#avatar').get(0).src = url;
+            $('#avatar').get(0).src = thumbUrl;
             thumbnail = $('#localVideoContainer');
         }
 
         // set the avatar in the contact list
         var contact = $('#' + resourceJid + '>img');
         if(contact && contact.length > 0) {
-            contact.get(0).src = url;
+            contact.get(0).src = contactListUrl;
         }
 
         // set the avatar in the thumbnail
         if(avatar && avatar.length > 0) {
-            avatar[0].src = url;
+            avatar[0].src = thumbUrl;
         } else {
             if (thumbnail && thumbnail.length > 0) {
                 avatar = document.createElement('img');
                 avatar.id = 'avatar_' + resourceJid;
                 avatar.className = 'userAvatar';
-                avatar.src = url;
+                avatar.src = thumbUrl;
                 thumbnail.append(avatar);
             }
         }