diff --git a/share/man/man5/periodic.conf.5 b/share/man/man5/periodic.conf.5
index e9acec0a0015..b7f42e8c1682 100644
--- a/share/man/man5/periodic.conf.5
+++ b/share/man/man5/periodic.conf.5
@@ -1,4 +1,4 @@
-\"-
+.\"-
 .\" Copyright (c) 2000 Brian Somers <brian@Awfulhak.org>
 .\" All rights reserved.
 .\"