Use .Mt to mark up email addresses.
diff --git a/docs/man/nginx.8 b/docs/man/nginx.8
index f2ed9f7..10db3e6 100644
--- a/docs/man/nginx.8
+++ b/docs/man/nginx.8
@@ -205,10 +205,10 @@
started in 2002, with the first public release on October 4, 2004.
.Sh AUTHORS
.An -nosplit
-.An Igor Sysoev Aq igor@sysoev.ru .
+.An Igor Sysoev Aq Mt igor@sysoev.ru .
.Pp
This manual page was originally written by
-.An Sergey A. Osokin Aq osa@FreeBSD.org.ru
+.An Sergey A. Osokin Aq Mt osa@FreeBSD.org.ru
as a result of compiling many
.Nm
documents from all over the world.
