diff --git a/app/static/js/services/soundfontPlayer.js b/app/static/js/services/soundfontPlayer.js
index efd8e50..20ec72e 100644
--- a/app/static/js/services/soundfontPlayer.js
+++ b/app/static/js/services/soundfontPlayer.js
@@ -371,7 +371,7 @@
                 try {
                     console.log("[SonicSF] noteOn ch:", ch, "pitch:", midiPitch, "vel:", midiVel);
                     _fluidModule._fluid_synth_noteon(_synthPtr, ch, midiPitch, midiVel);
-                    if (delay > 0) {
+                    if (durationMs > 0 && durationMs < 60000) {
                         scheduledNote.off = setTimeout(function () {
                             try {
                                 _fluidModule._fluid_synth_noteoff(_synthPtr, ch, midiPitch);