diff --git a/units/rc-local.service.in b/units/rc-local.service.in
index d4db1747ed..480dddbe37 100644
--- a/units/rc-local.service.in
+++ b/units/rc-local.service.in
@@ -17,3 +17,4 @@ Type=forking
 ExecStart=@RC_LOCAL_SCRIPT_PATH_START@ start
 TimeoutSec=0
 RemainAfterExit=yes
+GuessMainPID=no