diff --git a/source/funkin/audio/FunkinSound.hx b/source/funkin/audio/FunkinSound.hx
index dae31cd07..54e125ec5 100644
--- a/source/funkin/audio/FunkinSound.hx
+++ b/source/funkin/audio/FunkinSound.hx
@@ -543,7 +543,7 @@ class FunkinSound extends FlxSound implements ICloneable<FunkinSound>
    */
   public static function playOnce(key:String, volume:Float = 1.0, ?onComplete:Void->Void, ?onLoad:Void->Void):Null<FunkinSound>
   {
-    var result = FunkinSound.load(key, volume, false, true, true, onComplete, onLoad);
+    var result:Null<FunkinSound> = FunkinSound.load(key, volume, false, true, true, onComplete, onLoad);
     return result;
   }