conf/example.conf.in         | 3 ++-
 lib/config/config_settings.h | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/conf/example.conf.in b/conf/example.conf.in
index fe17942..d149ed9 100644
--- a/conf/example.conf.in
+++ b/conf/example.conf.in
@@ -122,7 +122,8 @@ devices {
 	# Example
 	# preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
 	# 
-	# This configuration option does not have a default value defined.
+	# This configuration option has an automatic default value.
+	# preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
 
 	# Configuration option devices/filter.
 	# Limit the block devices that are used by LVM commands.
diff --git a/lib/config/config_settings.h b/lib/config/config_settings.h
index 163e014..3c4032e 100644
--- a/lib/config/config_settings.h
+++ b/lib/config/config_settings.h
@@ -269,7 +269,7 @@ cfg(devices_hints_CFG, "hints", devices_CFG_SECTION, CFG_DEFAULT_COMMENTED, CFG_
 	"    Use no hints.\n"
 	"#\n")
 
-cfg_array(devices_preferred_names_CFG, "preferred_names", devices_CFG_SECTION, CFG_ALLOW_EMPTY | CFG_DEFAULT_UNDEFINED , CFG_TYPE_STRING, NULL, vsn(1, 2, 19), NULL, 0, NULL,
+cfg_array(devices_preferred_names_CFG, "preferred_names", devices_CFG_SECTION, CFG_ALLOW_EMPTY | CFG_DEFAULT_COMMENTED, CFG_TYPE_STRING, "#S^/dev/mpath/#S^/dev/mapper/mpath#S^/dev/[hs]d", vsn(1, 2, 19), NULL, 0, NULL,
 	"Select which path name to display for a block device.\n"
 	"If multiple path names exist for a block device, and LVM needs to\n"
 	"display a name for the device, the path names are matched against\n"