--- a/scp.c	Tue Oct 21 22:34:20 2014 +0800
+++ b/scp.c	Sun Jan 04 22:33:12 2015 +0800
@@ -1146,7 +1146,7 @@
 {
 	(void) fprintf(stderr,
 	    "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
-	    "           [-l limit] [-o ssh_option] [-P port] [-S program]\n"
+	    "           [-l limit] [-P port] [-S program]\n"
 	    "           [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
 	exit(1);
 }