diff --git a/script.js b/script.js
index ec53695..9587d33 100644
--- a/script.js
+++ b/script.js
@@ -326,6 +326,8 @@ async function startGame(gameID) {
 
     // Listen for key press events
     document.body.addEventListener("keydown", (ev) => {
+        if(!canvas.isConnected)
+            return;
         if(["ArrowDown", "ArrowLeft", "ArrowRight", "ArrowUp"].includes(ev.key))
             key = ev.key;