diff --git a/lib/libc/net/rcmd.c b/lib/libc/net/rcmd.c
index d46410a25a0..96d5bab32e8 100644
--- a/lib/libc/net/rcmd.c
+++ b/lib/libc/net/rcmd.c
@@ -333,8 +333,7 @@ rresvport_af(alport, family)
 	}
 #endif
 	*sport = 0;
-	if (bindresvport_sa(s, (struct sockaddr *)&ss,
-			    ((struct sockaddr *)&ss)->sa_len) == -1) {
+	if (bindresvport_sa(s, (struct sockaddr *)&ss) == -1) {
 		(void)_libc_close(s);
 		return (-1);
 	}