diff --git a/debian/postfwd.README.Debian b/debian/postfwd.README.Debian
index 545b8df..3786797 100644
--- a/debian/postfwd.README.Debian
+++ b/debian/postfwd.README.Debian
@@ -55,7 +55,8 @@ Samples can be taken into the logfile when starting the daemon with "-vv"
 --------------------
 
 In order to avoid the startup of the daemon on an unconfigured machine,
-automatic startup, on boot, is disabled by default. To enable it just edit the
+automatic startup, on boot, is disabled by default. To enable it just run
+'systemctl enable postfwd.service', when still using SysVinit edit the
 file /etc/default/postfwd and set the "startup" variable to 1.
 
 4. CHOOSING WHICH POSTFWD VERSION TO USE
diff --git a/debian/postfwd.default b/debian/postfwd.default
index 789c4b7..619f4ea 100644
--- a/debian/postfwd.default
+++ b/debian/postfwd.default
@@ -1,6 +1,6 @@
 # Global options for postfwd(8).
 
-# Set to '1' to enable startup (daemon mode)
+# Set to '1' to enable startup (daemon mode), doesn't affect systemd
 STARTUP=0
 
 # Config file