diff --git a/service/core/core.go b/service/core/core.go
index 3b433491..cb24847f 100644
--- a/service/core/core.go
+++ b/service/core/core.go
@@ -2,7 +2,6 @@ package core
 
 import (
 	"errors"
-	"flag"
 	"fmt"
 	"sync/atomic"
 
@@ -49,17 +48,6 @@ func (c *Core) Stop() error {
 	return nil
 }
 
-var disableShutdownEvent bool
-
-func init() {
-	flag.BoolVar(
-		&disableShutdownEvent,
-		"disable-shutdown-event",
-		false,
-		"disable shutdown event to keep app and notifier open when core shuts down",
-	)
-}
-
 func prep() error {
 	// init config
 	if err := registerConfig(); err != nil {