diff --git a/local_plugins/azure_speech/android/src/main/kotlin/com/yunqiinnovation/azure_speech/XunFeiAsrHelper.kt b/local_plugins/azure_speech/android/src/main/kotlin/com/yunqiinnovation/azure_speech/XunFeiAsrHelper.kt
index 51e15ad21..647e005f2 100644
--- a/local_plugins/azure_speech/android/src/main/kotlin/com/yunqiinnovation/azure_speech/XunFeiAsrHelper.kt
+++ b/local_plugins/azure_speech/android/src/main/kotlin/com/yunqiinnovation/azure_speech/XunFeiAsrHelper.kt
@@ -5,6 +5,7 @@ import android.util.Base64
 import android.util.Log
 import okhttp3.*
 import okio.ByteString
+import okio.ByteString.Companion.toByteString
 import org.json.JSONObject
 import java.net.URLEncoder
 import java.nio.charset.StandardCharsets
@@ -66,9 +67,7 @@ class XunFeiAsrHelper(private val context: Context) {
   }
 
   fun sendAudio(frameBuffer: ByteArray) {
-    webSocket?.let { ws ->
-      ws.send(ByteString.of(frameBuffer, 0, frameBuffer.size))
-    }
+    webSocket?.send(frameBuffer.toByteString())
   }
 
   fun close() {