diff --git a/sbin/md5/md5.1 b/sbin/md5/md5.1
index ccccb01f7e78..2eb928044d95 100644
--- a/sbin/md5/md5.1
+++ b/sbin/md5/md5.1
@@ -35,7 +35,7 @@ runs a built-in test script.
 .B filename(s)
 prints a checksum(s) for each of the files.
 .SH "SEE ALSO"
-.BR sum (1)
+.BR cksum (1)
 .PP
 RFC 1321 describes in detail the MD2, MD4, and MD5 message-digest algorithms.
 .SH ACKNOWLEDGEMENTS