diff --git a/src/games/letters.js b/src/games/letters.js
index d884712..684aedd 100644
--- a/src/games/letters.js
+++ b/src/games/letters.js
@@ -151,7 +151,7 @@ function onCommand(args, context) {
 }
 
 function onMessage(message, context) {
-	const game = games.get(context.room.id);
+	const game = games.get(context.room?.id);
 
 	if (message.type !== 'message' || context.user?.id === config.user?.id) { // stop listening to yourself
 		return;