From cbf30d07446e86893a223a619bad223853cf5399 Mon Sep 17 00:00:00 2001
From: Julien Pivotto <roidelapluie@inuits.eu>
Date: Mon, 15 Mar 2021 14:35:03 +0100
Subject: [PATCH] Fix panix when using backwards compatible flags

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
---
 collector/systemd_linux.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/collector/systemd_linux.go b/collector/systemd_linux.go
index b374b374..78e258f8 100644
--- a/collector/systemd_linux.go
+++ b/collector/systemd_linux.go
@@ -131,7 +131,7 @@ func NewSystemdCollector(logger log.Logger) (Collector, error) {
 		}
 	}
 	if *oldUnitInclude != "" {
-		if *unitInclude == "" {
+		if *unitInclude == ".+" { // .+ is the default value for collector.systemd.unit-include.
 			level.Warn(logger).Log("msg", "--collector.systemd.unit-whitelist is DEPRECATED and will be removed in 2.0.0, use --collector.systemd.unit-include")
 			*unitInclude = *oldUnitInclude
 		} else {