diff --git a/Audio-Transcription-Chrome/options.js b/Audio-Transcription-Chrome/options.js
index 316d5b6..9f685b7 100644
--- a/Audio-Transcription-Chrome/options.js
+++ b/Audio-Transcription-Chrome/options.js
@@ -82,6 +82,9 @@ async function startRecord(option) {
     const socket = new WebSocket(`ws://${option.host}:${option.port}/`);
     let isServerReady = false;
     let language = option.language;
+    if (language === null && !option.multilingual) {
+      language = 'en';
+    }
     socket.onopen = function(e) { 
       socket.send(
         JSON.stringify({
diff --git a/Audio-Transcription-Firefox/content.js b/Audio-Transcription-Firefox/content.js
index 5a6391e..d849b0d 100644
--- a/Audio-Transcription-Firefox/content.js
+++ b/Audio-Transcription-Firefox/content.js
@@ -42,6 +42,9 @@ function resampleTo16kHZ(audioData, origSampleRate = 44100) {
 function startRecording(data) {
     socket = new WebSocket(`ws://${data.host}:${data.port}/`);
     language = data.language;
+    if (language === null && !data.useMultilingual) {
+      language = 'en';
+    }
     socket.onopen = function(e) { 
       socket.send(
         JSON.stringify({