diff --git a/src/js/platform/sound.js b/src/js/platform/sound.js
index 76ac07da..28274111 100644
--- a/src/js/platform/sound.js
+++ b/src/js/platform/sound.js
@@ -27,6 +27,7 @@ export const SOUNDS = {
     placeBelt: "place_belt",
     copy: "copy",
     unlockUpgrade: "unlock_upgrade",
+    tutorialStep: "tutorial_step",
 };
 
 export const MUSIC = {