diff --git a/lib/utils/transcription-utils.js b/lib/utils/transcription-utils.js
index 70dd8d10..565160a7 100644
--- a/lib/utils/transcription-utils.js
+++ b/lib/utils/transcription-utils.js
@@ -1118,7 +1118,7 @@ module.exports = (logger) => {
         ...(vadSilenceThresholdSecs && {ELEVENLABS_VAD_SILENCE_THRESHOLD_SECS: vadSilenceThresholdSecs}),
         ...(vadThreshold && {ELEVENLABS_VAD_THRESHOLD: vadThreshold}),
         ...(minSpeechDurationMs && {ELEVENLABS_MIN_SPEECH_DURATION_MS: minSpeechDurationMs}),
-        ELEVENLABS_MIN_SILENCE_DURATION_MS: 1500,
+        ...(minSilenceDurationMs && {ELEVENLABS_MIN_SILENCE_DURATION_MS: minSilenceDurationMs}),
         ...(enableLogging && {ELEVENLABS_ENABLE_LOGGING: enableLogging ? 1 : 0}),
       };
     }