diff --git a/bin/web/js/audio.js b/bin/web/js/audio.js
index d64c954..1a4aba7 100644
--- a/bin/web/js/audio.js
+++ b/bin/web/js/audio.js
@@ -370,7 +370,7 @@ const Audio = function(tp, record) {
             letterDelay_inputDom.type = 'number';
             letterDelay_inputDom.name = toCssClass(`audio_letterDelay${propTitle}`);
             letterDelay_inputDom.id = toCssClass(`audio_letterDelay${propTitle}`);
-            letterDelay_inputDom.value = 0;
+            letterDelay_inputDom.value = mappingOptions.letterDelay ? mappingOptions.letterDelay : 0;
             letterDelay_inputDom.min = 0;
             letterDelay_inputDom.step = 1;
             letterDelayCont.append(letterDelay_inputDom_label);