diff --git a/gunicorn/workers/ggevent.py b/gunicorn/workers/ggevent.py
index 0a844db3..314a38ca 100644
--- a/gunicorn/workers/ggevent.py
+++ b/gunicorn/workers/ggevent.py
@@ -41,7 +41,7 @@ class GeventWorker(AsyncWorker):
         sockets = []
         for s in self.sockets:
             sockets.append(socket.socket(s.FAMILY, socket.SOCK_STREAM,
-                                         fileno=s.sock.fileno()))
+                                         fileno=s.sock.detach()))
         self.sockets = sockets
 
     def notify(self):