diff --git a/src/jianda_proxy/cli.py b/src/jianda_proxy/cli.py
index 1e00f00..05fae93 100644
--- a/src/jianda_proxy/cli.py
+++ b/src/jianda_proxy/cli.py
@@ -30,6 +30,7 @@ def build_parser():
     p_start = sub.add_parser("start", help="Start the proxy daemon")
     p_start.add_argument("--foreground", action="store_true", help="Run in foreground (no daemon)")
     p_start.add_argument("--port", type=str, default=None, help="Override listen port")
+    p_start.add_argument("--_daemon_child", action="store_true", help=argparse.SUPPRESS)
 
     # stop
     sub.add_parser("stop", help="Stop the proxy daemon")
@@ -67,8 +68,11 @@ def cmd_start(args):
 
     if args.foreground:
         _run_foreground(config_dict)
+    elif args._daemon_child:
+        _run_child(config_dict)
     else:
-        _run_daemonized(config_dict)
+        daemonize()
+        _run_child(config_dict)
 
 
 def _run_foreground(config_dict):
@@ -85,7 +89,7 @@ def _run_foreground(config_dict):
         server.server_close()
 
 
-def _run_daemonized(config_dict):
+def _run_child(config_dict):
     from logging.handlers import RotatingFileHandler
 
     log_path = get_log_path()
@@ -97,8 +101,6 @@ def _run_daemonized(config_dict):
     root.setLevel(logging.INFO)
     root.addHandler(handler)
 
-    daemonize()
-
     pid = os.getpid()
     write_pid(pid)
 
diff --git a/src/jianda_proxy/daemon.py b/src/jianda_proxy/daemon.py
index 3b3819f..1729707 100644
--- a/src/jianda_proxy/daemon.py
+++ b/src/jianda_proxy/daemon.py
@@ -111,14 +111,16 @@ def daemonize():
         import subprocess
 
         creation_flags = subprocess.CREATE_NEW_PROCESS_GROUP | subprocess.DETACHED_PROCESS
+        cmd = [sys.executable, "-m", "jianda_proxy"] + sys.argv[1:] + ["--_daemon_child"]
         subprocess.Popen(
-            [sys.executable] + sys.argv + ["--_daemon_child"],
+            cmd,
             creationflags=creation_flags,
             close_fds=True,
             stdin=subprocess.DEVNULL,
             stdout=subprocess.DEVNULL,
             stderr=subprocess.DEVNULL,
         )
+        sys.exit(0)
     else:
         pid = os.fork()
         if pid > 0: