diff --git a/addons/gamification/badge.py b/addons/gamification/badge.py
index 7ff80fc3967..f53683fbd91 100644
--- a/addons/gamification/badge.py
+++ b/addons/gamification/badge.py
@@ -27,8 +27,6 @@ from openerp.tools.safe_eval import safe_eval
 from templates import TemplateHelper
 from datetime import date
 
-import base64
-
 
 class gamification_badge_user(osv.Model):
     """User having received a badge"""
@@ -71,6 +69,17 @@ class gamification_badge(osv.Model):
             result[obj.id] = len(obj.owner_ids)
         return result
 
+    def _get_unique_global_list(self, cr, uid, ids, name, args, context=None):
+        """Return the list of unique res.users ids having received this badge"""
+        result = dict.fromkeys(ids, False)
+        for obj in self.browse(cr, uid, ids, context=context):
+            res = self.pool.get('gamification.badge.user').read_group(
+                                   cr, uid, domain=[('badge_id', '=', obj.id)],
+                                   fields=['badge_id', 'user_id'],
+                                   groupby=['user_id'], context=context)
+            result[obj.id] = [badge_user['user_id'][0] for badge_user in res]
+        return result
+
     def _get_unique_global_count(self, cr, uid, ids, name, args, context=None):
         """Return the number of time this badge has been granted to individual users"""
         result = dict.fromkeys(ids, False)
@@ -171,6 +180,10 @@ class gamification_badge(osv.Model):
             help="A message will be posted on the user profile or just sent to him"),
         'owner_ids': fields.one2many('gamification.badge.user', 'badge_id',
             string='Owners', help='The list of instances of this badge granted to users'),
+        'unique_owner_ids': fields.function(_get_unique_global_list,
+            string='Unique Owners',
+            help="The list of unique users having received this badge.",
+            type="many2many", relation="res.users"),
 
         'stat_count': fields.function(_get_global_count, string='Total',
             help="The number of time this badge has been received."),
diff --git a/addons/gamification/badge_view.xml b/addons/gamification/badge_view.xml
index cdb2c4dcac0..c6e08a9763a 100644
--- a/addons/gamification/badge_view.xml
+++ b/addons/gamification/badge_view.xml
@@ -124,6 +124,7 @@
                     <field name="stat_my"/>
                     <field name="stat_count"/>
                     <field name="stat_count_distinct"/>
+                    <field name="unique_owner_ids"/>
                     <templates>
                         <t t-name="kanban-box">
                             <div t-attf-class="#{record.stat_my.raw_value ? 'oe_kanban_color_5' : 'oe_kanban_color_white'} oe_kanban_card oe_kanban_global_click oe_kanban_badge">
@@ -147,9 +148,9 @@ jspW8F2wIbhtSRr0Vf4AD6Nod0TaN4kAAAAASUVORK5CYII=" alt="got-it" /></t> -->
                                         <em><field name="description"/></em>
                                     </t>
                                     <p>Granted <t t-esc="record.stat_count.raw_value" />x (<t t-esc="record.stat_count_distinct.raw_value"/> pers.)</p>
-                                    <div class="oe_kanban_project_avatars">
-                                        <t t-foreach="record.owner_ids.user_id.raw_value.slice(0,11)" t-as="member">
-                                            <img t-att-src="kanban_image('res.users', 'image_small', member)" t-att-data-member_id="member"/>
+                                    <div class="oe_kanban_badge_avatars">
+                                        <t t-foreach="record.unique_owner_ids.raw_value.slice(0,11)" t-as="owner">
+                                            <img t-att-src="kanban_image('res.users', 'image_small', owner)" t-att-data-member_id="owner"/>
                                         </t>
                                     </div>
                                 </div>
diff --git a/addons/gamification/static/src/css/goal.css b/addons/gamification/static/src/css/goal.css
index 030aca800d2..f3134f704b8 100644
--- a/addons/gamification/static/src/css/goal.css
+++ b/addons/gamification/static/src/css/goal.css
@@ -19,6 +19,16 @@
 }
 
 
+.oe_kanban_badge_avatars img {
+    width: 30px;
+    height: 30px;
+    padding-left: 0;
+    margin-top: 3px;
+    border-radius: 2px;
+    -box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
+}
+
+
 /* Mail Sidebar */
 
 .openerp .oe_mail_wall .oe_mail_wall_aside {