diff --git a/conf/example.conf.in b/conf/example.conf.in
index d6a1dd265..11d92ac2c 100644
--- a/conf/example.conf.in
+++ b/conf/example.conf.in
@@ -135,6 +135,16 @@ devices {
 	# This configuration option has an automatic default value.
 	# devicesfile = "system.devices"
 
+	# Configuration option devices/devicesfile_backup_limit.
+	# The max number of backup files to keep in /etc/lvm/devices/backup.
+	# LVM creates a backup of the devices file each time a new
+	# version is created, or each time a modification is detected.
+	# When the max number of backups is reached, the oldest are
+	# removed to remain at the limit. Set to 0 to disable backups.
+	# Only the system devices file is backed up.
+	# This configuration option has an automatic default value.
+	# devicesfile_backup_limit = 50
+
 	# Configuration option devices/search_for_devnames.
 	# Look outside of the devices file for missing devname entries.
 	# A devname entry is used for a device that does not have a stable
@@ -1387,8 +1397,9 @@ global {
 	#     Use an LVM-specific derivation of the local machine-id as the
 	#     system ID. See 'man machine-id'.
 	#   machineid
-	#     Use the contents of the machine-id file to set the system ID
-	#     (appmachineid is recommended.)
+	#     Use the contents of the machine-id file to set the system ID.
+	#     (appmachineid is recommended to avoid exposing the confidential
+	#     machine-id.)
 	#   file
 	#     Use the contents of another file (system_id_file) to set the
 	#     system ID.
diff --git a/man/pvs.8_pregen b/man/pvs.8_pregen
index 2c21c6cda..fa8ced919 100644
--- a/man/pvs.8_pregen
+++ b/man/pvs.8_pregen
@@ -142,7 +142,7 @@ by LVM, i.e. they are not PVs.
 \fB-A\fP|\fB--allpvs\fP
 .br
 Show information about PVs outside the devices file.
-Combine with with -a|--all to include devices that are not PVs.
+Combine with -a|--all to include devices that are not PVs.
 .
 .HP
 \fB--binary\fP