diff --git a/share/man/man4/mpt.4 b/share/man/man4/mpt.4
index 5408f16d6b7..0ee6fd231e5 100644
--- a/share/man/man4/mpt.4
+++ b/share/man/man4/mpt.4
@@ -103,4 +103,4 @@ by
 .An Greg Ansley
 and substantially improved upon
 by
-.An Matt Jacob Aq mjacob@FreeBSD.ORG .
+.An Matt Jacob Aq mjacob@FreeBSD.org .