diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index e98d5cc8e3e0..ddeb90bb2ef0 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -326,7 +326,7 @@ var (
 		Usage:    "Target EL engine API URL",
 		Category: flags.BeaconCategory,
 	}
-	BlsyncJWTSecretFlag = &cli.StringFlag{
+	BlsyncJWTSecretFlag = &flags.DirectoryFlag{
 		Name:     "blsync.jwtsecret",
 		Usage:    "Path to a JWT secret to use for target engine API endpoint",
 		Category: flags.BeaconCategory,