diff --git a/auth.go b/auth.go
index 07bc0d8..5cbcbe8 100644
--- a/auth.go
+++ b/auth.go
@@ -9,7 +9,7 @@ import (
 )
 
 // Version ...
-const Version = "1.5.2"
+const Version = "1.5.3"
 
 // TokenExtractor is a function that takes a gear.Context as input and
 // returns either a string token or an empty string. Default to:
@@ -91,7 +91,9 @@ func (a *Auth) New(ctx *gear.Context) (val interface{}, err error) {
 		// create a empty jwt.Claims
 		val = josejwt.Claims{}
 		if err == nil {
-			err = &gear.Error{Code: 401, Msg: "no token found"}
+			err = gear.ErrUnauthorized.WithMsg("no token found")
+		} else {
+			err = gear.ErrUnauthorized.From(err)
 		}
 	}
 	ctx.SetAny(a, val)
diff --git a/auth_test.go b/auth_test.go
index fd1ee13..1ff856b 100644
--- a/auth_test.go
+++ b/auth_test.go
@@ -38,7 +38,7 @@ func TestGearAuth(t *testing.T) {
 		assert.Nil(err)
 		assert.Equal(401, res.StatusCode)
 		body, _ := res.Text()
-		assert.Equal("no token found", body)
+		assert.Equal(`{"error":"Unauthorized","message":"no token found"}`, body)
 
 		a1 := New([]byte("wrong key"))
 		claims := jwt.Claims{}