diff --git a/example/demo.go b/example/demo.go
index dcc80af..5ff8126 100644
--- a/example/demo.go
+++ b/example/demo.go
@@ -5,16 +5,16 @@ github.com/twitter/snowflake in golang
 package main
 
 import (
-	"github.com/sdming/gosnow"
 	"fmt"
+	"github.com/sdming/gosnow"
 )
 
 func main() {
 
-	v := gosnow.Default()
+	v, _ := gosnow.Default()
 	//v := gosnow.NewSnowFlake(100)
 	for i := 0; i < 10; i++ {
-		id := v.Next()
+		id, _ := v.Next()
 		fmt.Println(id)
 	}
 }