diff --git a/kokoro.js/src/voices.js b/kokoro.js/src/voices.js
index 99b78bc..7146350 100644
--- a/kokoro.js/src/voices.js
+++ b/kokoro.js/src/voices.js
@@ -461,7 +461,7 @@ async function getVoiceFile(id) {
     return buffer;
   }
 
-  const url = `${VOICE_DATA_URL}/${id}.bin`;
+  const url = `${voiceDataUrl}/${id}.bin`;
 
   let cache;
   try {