diff --git a/friends.py b/friends.py
index 4f24d79..ce9b111 100644
--- a/friends.py
+++ b/friends.py
@@ -59,6 +59,8 @@ def add(sender, names):
 
   for name in names:
     player = server.getOfflinePlayer(name)
+    # FIXME: breaks if player not known
+    # FIXME: might to a blocking call, maybe we can use getOfflinePlayers()
     if known_player(player):
       player_id = uid(player)
       not_yourself = player != sender