diff --git a/lib/synth-audio.js b/lib/synth-audio.js
index fa50ea5..4bc83a5 100644
--- a/lib/synth-audio.js
+++ b/lib/synth-audio.js
@@ -145,7 +145,7 @@ async function synthAudio(client, logger, stats, { account_sid,
       ['microsoft', 'azure'].includes(vendor)
     ) ||
     (
-      process.env.JAMBONES_ELEVENLABS_STREAMING &&
+      !process.env.JAMBONES_DISABLE_TTS_STREAMING &&
       vendor === 'elevenlabs'
     )
   ) {