diff --git a/man/sxlink_master_accept.3 b/man/sxlink_master_accept.3
index c2e5a31..52b4f63 100644
--- a/man/sxlink_master_accept.3
+++ b/man/sxlink_master_accept.3
@@ -8,9 +8,9 @@ sxlink_close \- Close link.
 .SH SYNOPSIS
 .B #include <sxmp/sxmp.h>
 .sp
-sxlink_t *sxlink_master_accept(sxhub_t *ssys, int sck, struct in_addr *addr);
+sxlink_t *sxlink_master_accept(sxhub_t *hub, int sck, struct in_addr *addr);
 
-sxlink_t *sxlink_connect(sxhub_t *ssys, const char *host,
+sxlink_t *sxlink_connect(sxhub_t *hub, const char *host,
                          int port, const char *SSL_cert, const char *login,
                          const char *passwd);
 
@@ -21,7 +21,7 @@ int sxlink_close(sxlink_t *co);
 .SH DESCRIPTION
 .B sxlink_master_accept
 will create a new link within 
-.B ssys
+.B hub
 hub with already accepted socket fd
 .B sck
 and set ip address of this connection pointed by
@@ -32,7 +32,7 @@ is NULL, peer address will not set.
 .br
 .B sxlink_connect 
 will create a new link to the master side using 
-.B ssys
+.B hub
 hub to the host pointed via hostname or ip address in nul terminated string
 .B host 
 running on port number