diff --git a/js/turtleactions/ToneActions.js b/js/turtleactions/ToneActions.js
index 71fab17d89..2827a2405e 100644
--- a/js/turtleactions/ToneActions.js
+++ b/js/turtleactions/ToneActions.js
@@ -88,8 +88,10 @@ function setupToneActions(activity) {
                 activity.logo.phraseMaker._instrumentName = synth;
             }
 
+            let pushed = false;
             if (!tur.singer.instrumentNames.includes(synth)) {
                 tur.singer.instrumentNames.push(synth);
+                pushed = true;
                 activity.logo.synth.loadSynth(turtle, synth);
 
                 if (tur.singer.synthVolume[synth] === undefined) {
@@ -113,7 +115,9 @@ function setupToneActions(activity) {
 
             const __listener = () => {
                 tur.inSetTimbre = false;
-                tur.singer.instrumentNames.pop();
+                if (pushed) {
+                    tur.singer.instrumentNames.pop();
+                }
             };
 
             activity.logo.setTurtleListener(turtle, listenerName, __listener);