diff --git a/libs/music/sounds.ts b/libs/music/sounds.ts
index 464b0e5f..42c9be73 100644
--- a/libs/music/sounds.ts
+++ b/libs/music/sounds.ts
@@ -284,6 +284,7 @@ namespace music {
     //% blockId=music_play_sound_effect block="play sound effect %sound"
     //% weight=99
     export function playSoundEffect(sound: Sound) {
+        if (!sound) return;
         control.runInBackground(() => sound.play());
     }
 }