diff --git a/g_migration.go b/g_migration.go
index 3eccff6..26c4f19 100644
--- a/g_migration.go
+++ b/g_migration.go
@@ -67,8 +67,6 @@ func formatSourceCode(fpath string) {
 const MIGRATION_TPL = `package main
 
 import (
-	"time"
-
 	"github.com/astaxie/beego/migration"
 )