--- src/lib/libc/gen/arc4random.3	2007/04/06 06:46:28	1.4
+++ src/lib/libc/gen/arc4random.3	2007/04/07 19:29:51	1.5
@@ -94,12 +94,12 @@ functions using
 .Xr random 3 ,
 .Xr srandomdev 3
 .Sh HISTORY
-.Pa RC4
+.Tn RC4
 has been designed by RSA Data Security, Inc.
 It was posted anonymously
 to the USENET and was confirmed to be equivalent by several sources who
 had access to the original cipher.
 Since
-.Pa RC4
+.Tn RC4
 used to be a trade secret, the cipher is now referred to as
-.Pa ARC4 .
+.Tn ARC4 .