diff --git a/wlm_server/operation/consumers.py b/wlm_server/operation/consumers.py
index 5ee4c61..dcbe96d 100644
--- a/wlm_server/operation/consumers.py
+++ b/wlm_server/operation/consumers.py
@@ -14,3 +14,6 @@ async def connect(self):
         self.group_name = f'channel_{self.ch}'
         await self.channel_layer.group_add(self.group_name, self.channel_name)
         await self.accept()
+
+    async def disconnect(self, code):
+        await self.channel_layer.group_discard(self.group_name, self.channel_name)