diff --git a/assets/js/tools.js b/assets/js/tools.js
index 50f08e2..5909c68 100644
--- a/assets/js/tools.js
+++ b/assets/js/tools.js
@@ -164,6 +164,7 @@ function setTool(toolName) {
   els.transcribeLangControl.classList.toggle('is-hidden', toolName !== 'transcribe');
   els.input.classList.toggle('is-hidden', toolName === 'transcribe');
   els.inputLabel.classList.toggle('is-hidden', toolName === 'transcribe');
+  els.input.required = toolName !== 'transcribe';
   resetUpload();
   resetAliases();
   resetAudio();