diff --git a/js/views/group_update_view.js b/js/views/group_update_view.js
index 7f3bde17..ec0d51a5 100644
--- a/js/views/group_update_view.js
+++ b/js/views/group_update_view.js
@@ -28,7 +28,7 @@
                 messages.push("Title is now '" + this.model.name + "'.");
             }
             if (this.model.joined) {
-                messages.push(this.model.joined + ' joined the group');
+                messages.push(this.model.joined.join(', ') + ' joined the group');
             }
 
             this.$el.text(messages.join(' '));