diff --git a/sysdeps/mach/hurd/select.c b/sysdeps/mach/hurd/select.c
index 434cfbbec7..3de8f209d2 100644
--- a/sysdeps/mach/hurd/select.c
+++ b/sysdeps/mach/hurd/select.c
@@ -189,7 +189,7 @@ DEFUN(__select, (nfds, readfds, writefds, exceptfds, timeout),
       error_t msgerr;
       while ((msgerr = __mach_msg (&msg.head,
 				   MACH_RCV_MSG | options,
-				   sizeof msg, 0, port, to,
+				   0, sizeof msg, port, to,
 				   MACH_PORT_NULL)) == MACH_MSG_SUCCESS)
 	{
 	  /* We got a message.  Decode it.  */