diff --git a/web/js/chatballoon.js b/web/js/chatballoon.js
index 0aec1ba9..e47bd67d 100644
--- a/web/js/chatballoon.js
+++ b/web/js/chatballoon.js
@@ -18,6 +18,8 @@ componentconstructors['chatballoon'] = function(dynmap, configuration) {
 			return;
 		}
 		var player = dynmap.players[message.name];
+		if (!player)
+			return;
 		if (dynmap.world !== player.location.world) {
 			return;
 		}