diff --git a/moonlight/js/moonlight-skulk.js b/moonlight/js/moonlight-skulk.js
index df9ee25..2e0205c 100644
--- a/moonlight/js/moonlight-skulk.js
+++ b/moonlight/js/moonlight-skulk.js
@@ -108,7 +108,7 @@ SoundSprite.prototype.update_new_values = function() {
 SoundSprite.prototype.adjust_relative_to = function(spr) {
     if ( this.sound_alwaysplay == false ) {
 	// we can't use inCamera because we don't have a body/sprite
-	if ( ! game.camera.screenView.contains(this.x, this.y) ) {
+	if ( game.camera.screenView.contains(this.x, this.y) == false ) {
 	    console.log("Sound is not on camera");
 	    // don't turn it off, let it continue at zero volume
 	    // for more realistic effect whe the player returns