diff --git a/README.md b/README.md
index 0ec93f6..ef6bbb8 100644
--- a/README.md
+++ b/README.md
@@ -110,7 +110,6 @@ Check out the [Budget Manual](https://github.com/n3d1117/chatgpt-telegram-bot/di
 | `SPOTIFY_CLIENT_SECRET`           | Spotify app Client Secret (required for the `spotify` plugin, you can find it on the [dashboard](https://developer.spotify.com/dashboard/))      | `-`                                 |
 | `SPOTIFY_REDIRECT_URI`            | Spotify app Redirect URI (required for the `spotify` plugin, you can find it on the [dashboard](https://developer.spotify.com/dashboard/))       | `-`                                 |
 | `DEEPL_API_KEY`                   | DeepL API key (required for the `deepl` plugin, you can get one [here](https://www.deepl.com/pro-api?cta=header-pro-api))                        | `-`                                 |
-| `DEEPL_API_PRO`                   | DeepL API key plan (required for the `deepl` plugin. set 'true' if you have paid api key)                       | `false`                                 |
 
 #### Available plugins
 | Name           | Description                                                                                                                                         | Required API key(s)                                                  |
diff --git a/bot/plugins/deepl.py b/bot/plugins/deepl.py
index 533db7a..b58d271 100644
--- a/bot/plugins/deepl.py
+++ b/bot/plugins/deepl.py
@@ -13,11 +13,9 @@ class DeeplTranslatePlugin(Plugin):
 
     def __init__(self):
             deepl_api_key = os.getenv('DEEPL_API_KEY')
-            deepl_api_pro = os.getenv('DEEPL_API_PRO', 'false').lower() == 'true'
             if not deepl_api_key:
                 raise ValueError('DEEPL_API_KEY environment variable must be set to use DeepL Plugin')
             self.api_key = deepl_api_key
-            self.api_pro = deepl_api_pro
 
     def get_source_name(self) -> str:
         return "DeepL Translate"
@@ -37,10 +35,10 @@ class DeeplTranslatePlugin(Plugin):
         }]
 
     async def execute(self, function_name, **kwargs) -> Dict:
-        if self.api_pro:
-            url = "https://api.deepl.com/v2/translate"
-        else:
+        if self.api_key.endswith(':fx'):
             url = "https://api-free.deepl.com/v2/translate"
+        else:
+            url = "https://api.deepl.com/v2/translate"
              
         headers = {
             "Authorization": f"DeepL-Auth-Key {self.api_key}",