diff --git a/manga_translator/server/ui.html b/manga_translator/server/ui.html
index 2e6d4fb6..88dcb9fc 100644
--- a/manga_translator/server/ui.html
+++ b/manga_translator/server/ui.html
@@ -292,7 +292,7 @@ <h1 class="text-center text-lg font-light">Image/Manga Translator</h1>
           formData.append('detector', this.textDetector)
           formData.append('direction', this.renderTextDirection)
           formData.append('translator', this.translator)
-          formData.append('tgt_lang', this.targetLanguage)
+          formData.append('target_lang', this.targetLanguage)
 
           const xhr = new XMLHttpRequest()
           xhr.open('POST', `${BASE_URI}submit`, true)
diff --git a/manga_translator/server/web_main.py b/manga_translator/server/web_main.py
index 038fdfc8..02e04b7f 100644
--- a/manga_translator/server/web_main.py
+++ b/manga_translator/server/web_main.py
@@ -152,8 +152,8 @@ async def handle_post(request):
     target_language = 'CHS'
     detector = 'default'
     direction = 'auto'
-    if 'tgt_lang' in data:
-        target_language = data['tgt_lang'].upper()
+    if 'target_lang' in data:
+        target_language = data['target_lang'].upper()
         # TODO: move dicts to their own files to reduce load time
         if target_language not in VALID_LANGUAGES:
             target_language = 'CHS'