diff --git a/pytchat/core_async/livechat.py b/pytchat/core_async/livechat.py
index b6f4f8e..2f61aae 100644
--- a/pytchat/core_async/livechat.py
+++ b/pytchat/core_async/livechat.py
@@ -109,7 +109,9 @@ class LiveChatAsync:
         self._topchat_only = topchat_only
         if not LiveChatAsync._setup_finished:
             LiveChatAsync._setup_finished = True
-            if exception_handler:
+            if exception_handler == None:
+                self._set_exception_handler(self._handle_exception)
+            else:
                 self._set_exception_handler(exception_handler)
             if interruptable:
                 signal.signal(signal.SIGINT,  
@@ -319,6 +321,11 @@ class LiveChatAsync:
             self._buffer.put_nowait({'chatdata':'','timeout':0}) 
         logger.info(f'[{self.video_id}]finished.')
  
+    @classmethod
+    def _set_exception_handler(cls, handler):
+        loop = asyncio.get_event_loop()
+        loop.set_exception_handler(handler)
+    
     @classmethod
     async def shutdown(cls, event, sig = None, handler=None):
         logger.debug("shutdown...")