diff --git a/lib/xenu_nntp/session.py b/lib/xenu_nntp/session.py
index 1738378..9799833 100644
--- a/lib/xenu_nntp/session.py
+++ b/lib/xenu_nntp/session.py
@@ -391,7 +391,7 @@ class Session(Connection):
 
     def _cmd_list(self, *args):
         if len(args) == 0:
-            return self.respond(ResponseCode.NNTP_SYNTAX_ERROR, "No subcommand provided")
+            args = ('ACTIVE',)
 
         subcmd, *subargs = args