diff --git a/src-python/config.py b/src-python/config.py
index 26314bee..d781aacb 100644
--- a/src-python/config.py
+++ b/src-python/config.py
@@ -90,10 +90,6 @@ class Config:
     def MESSAGE_BOX_RATIO_RANGE(self):
         return self._MESSAGE_BOX_RATIO_RANGE
 
-    @property
-    def SELECTABLE_UI_LANGUAGES_DICT(self):
-        return self._SELECTABLE_UI_LANGUAGES_DICT
-
     @property
     def SELECTABLE_CTRANSLATE2_WEIGHT_TYPE_DICT(self):
         return self._SELECTABLE_CTRANSLATE2_WEIGHT_TYPE_DICT
@@ -428,7 +424,7 @@ class Config:
 
     @UI_LANGUAGE.setter
     def UI_LANGUAGE(self, value):
-        if value in list(self.SELECTABLE_UI_LANGUAGES_DICT.keys()):
+        if isinstance(value, str):
             self._UI_LANGUAGE = value
             saveJson(self.PATH_CONFIG, inspect.currentframe().f_code.co_name, value)
 
@@ -988,13 +984,6 @@ class Config:
         self._UI_SCALING_LIST = generatePercentageStringsList(start=40, end=200, step=10)
         self._TEXTBOX_UI_SCALING_RANGE = (50, 200)
         self._MESSAGE_BOX_RATIO_RANGE = (1, 99)
-        self._SELECTABLE_UI_LANGUAGES_DICT = {
-            "en": "English",
-            "ja": "日本語",
-            "ko": "한국어",
-            "zh-Hant": "繁體中文"
-            # If you want to add a new language and key, please append it here.
-        }
         self._SELECTABLE_CTRANSLATE2_WEIGHT_TYPE_DICT = {
             # {Save json str}: {i18n_placeholder} pairs
             "Small": "Small",
diff --git a/src-python/webui_mainloop.py b/src-python/webui_mainloop.py
index 77e0b41b..1e96b257 100644
--- a/src-python/webui_mainloop.py
+++ b/src-python/webui_mainloop.py
@@ -12,7 +12,6 @@ config_mapping = {
     "/config/ui_scaling_list": "UI_SCALING_LIST",
     "/config/textbox_ui_scaling_range": "TEXTBOX_UI_SCALING_RANGE",
     "/config/message_box_ratio_range": "MESSAGE_BOX_RATIO_RANGE",
-    "/config/selectable_ui_languages_dict": "SELECTABLE_UI_LANGUAGES_DICT",
     "/config/selectable_ctranslate2_weight_type_dict": "SELECTABLE_CTRANSLATE2_WEIGHT_TYPE_DICT",
     "/config/selectable_whisper_weight_type_dict": "SELECTABLE_WHISPER_WEIGHT_TYPE_DICT",
     "/config/max_mic_energy_threshold": "MAX_MIC_ENERGY_THRESHOLD",