diff --git a/coco/httpd.py b/coco/httpd.py
index 17de9bff0129f061c2c975e6de39a1bb3291cdd4..bd3b0f307687bc6b9b67ee81b677f195ce6650b0 100644
--- a/coco/httpd.py
+++ b/coco/httpd.py
@@ -147,7 +147,7 @@ class SSHws(Namespace, BaseWebSocketHandler):
 
     def on_logout(self, connection):
         logger.debug("Session {} logout {}".format(request.sid, connection))
-        if connection and request.id in self.clients[request.sid].keys():
+        if connection and request.sid in self.clients[request.sid].keys():
             if connection in self.clients[request.sid]["proxy"].keys():
                 proxy = self.clients[request.sid]["proxy"][connection]
                 del self.clients[request.sid]["proxy"][connection]