diff --git a/modules/ChatPopup/control.lua b/modules/ChatPopup/control.lua
index c22c1564..6ab99fd3 100644
--- a/modules/ChatPopup/control.lua
+++ b/modules/ChatPopup/control.lua
@@ -32,6 +32,7 @@ function ChatPopup.sendFlyingText(player, text)
 end
 
 script.on_event(defines.events.on_console_chat, function(event)
+  if not event.player_index then return end
   local player = game.players[event.player_index]
   if not player then return end
   if not event.message then return end