diff --git a/davtelepot/__init__.py b/davtelepot/__init__.py
index ce27688..353d272 100644
--- a/davtelepot/__init__.py
+++ b/davtelepot/__init__.py
@@ -11,7 +11,7 @@ __author__ = "Davide Testa"
 __email__ = "davide@davte.it"
 __credits__ = ["Marco Origlia", "Nick Lee @Nickoala"]
 __license__ = "GNU General Public License v3.0"
-__version__ = "2.7.5"
+__version__ = "2.7.6"
 __maintainer__ = "Davide Testa"
 __contact__ = "t.me/davte"
 
diff --git a/davtelepot/bot.py b/davtelepot/bot.py
index 8132444..281847b 100644
--- a/davtelepot/bot.py
+++ b/davtelepot/bot.py
@@ -1896,7 +1896,7 @@ class Bot(TelegramBot, ObjectWithDatabase, MultiLanguageObject):
                 )
         return sent_update
 
-    async def send_document(self, chat_id: Union[int, str], document=None,
+    async def send_document(self, chat_id: Union[int, str] = None, document=None,
                             thumb=None,
                             caption: str = None,
                             parse_mode: str = None,
@@ -1937,6 +1937,9 @@ class Bot(TelegramBot, ObjectWithDatabase, MultiLanguageObject):
             update = update['message']
         if chat_id is None and 'chat' in update:
             chat_id = self.get_chat_id(update)
+        if chat_id is None:
+            logging.error("Attempt to send document without providing a chat_id")
+            return
         if reply_to_update and 'message_id' in update:
             reply_to_message_id = update['message_id']
         if chat_id > 0: