diff --git a/realize/cli.go b/realize/cli.go
index 55e0c37..8e38f3a 100644
--- a/realize/cli.go
+++ b/realize/cli.go
@@ -13,7 +13,7 @@ import (
 	"github.com/go-siris/siris/core/errors"
 )
 
-const (
+var (
 	// RPrefix tool name
 	RPrefix = "realize"
 	// RVersion current version