diff --git a/man5/nologin.5 b/man5/nologin.5
index 2edb65b80..58fe77bee 100644
--- a/man5/nologin.5
+++ b/man5/nologin.5
@@ -35,7 +35,7 @@ Other users will
 be shown the contents of this file and their logins will be refused.
 This provides a simple way of temporarily disabling all unprivileged logins.
 .SH FILES
-/etc/nologin
+.I /etc/nologin
 .SH SEE ALSO
 .BR login (1),
 .BR shutdown (8)