diff --git a/app.go b/app.go
index b29bb962..4c506878 100644
--- a/app.go
+++ b/app.go
@@ -22,6 +22,7 @@ import (
 	"os"
 	"path"
 	"time"
+	"strings"
 
 	"github.com/astaxie/beego/grace"
 	"github.com/astaxie/beego/logs"