diff --git a/file.go b/file.go
index b4f435e..e2163a0 100644
--- a/file.go
+++ b/file.go
@@ -11,6 +11,7 @@ import (
 	"github.com/imdario/mergo"
 	"github.com/unistack-org/micro/v3/codec"
 	"github.com/unistack-org/micro/v3/config"
+	rutil "github.com/unistack-org/micro/v3/util/reflect"
 )
 
 var (
@@ -64,7 +65,7 @@ func (c *fileConfig) Load(ctx context.Context) error {
 		var buf []byte
 		buf, err = ioutil.ReadAll(io.LimitReader(fp, int64(codec.DefaultMaxMsgSize)))
 		if err == nil {
-			src, err := config.Zero(c.opts.Struct)
+			src, err := rutil.Zero(c.opts.Struct)
 			if err == nil {
 				err = c.opts.Codec.Unmarshal(buf, src)
 				if err == nil {
diff --git a/go.mod b/go.mod
index 102aa06..ea2c473 100644
--- a/go.mod
+++ b/go.mod
@@ -4,5 +4,5 @@ go 1.15
 
 require (
 	github.com/imdario/mergo v0.3.11
-	github.com/unistack-org/micro/v3 v3.1.1
+	github.com/unistack-org/micro/v3 v3.1.2
 )
diff --git a/go.sum b/go.sum
index 5d44984..35e0b3f 100644
--- a/go.sum
+++ b/go.sum
@@ -241,8 +241,8 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/timewasted/linode v0.0.0-20160829202747-37e84520dcf7/go.mod h1:imsgLplxEC/etjIhdr3dNzV3JeT27LbVu5pYWm0JCBY=
 github.com/transip/gotransip v0.0.0-20190812104329-6d8d9179b66f/go.mod h1:i0f4R4o2HM0m3DZYQWsj6/MEowD57VzoH0v3d7igeFY=
 github.com/uber-go/atomic v1.3.2/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex1PFV8g=
-github.com/unistack-org/micro/v3 v3.1.1 h1:kWL0BVzUBdotjfDbl1qL9lNYmZqvebQWPNCyqrjUSAk=
-github.com/unistack-org/micro/v3 v3.1.1/go.mod h1:0DgOy4OdJxQCDER8YSKitZugd2+1bddrRSNfeooTHDc=
+github.com/unistack-org/micro/v3 v3.1.2 h1:NZnO6uhdRmoW/IhbWT1HWRCNWwgKbLlX4XikNx1cMzI=
+github.com/unistack-org/micro/v3 v3.1.2/go.mod h1:0DgOy4OdJxQCDER8YSKitZugd2+1bddrRSNfeooTHDc=
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/vultr/govultr v0.1.4/go.mod h1:9H008Uxr/C4vFNGLqKx232C206GL0PBHzOP0809bGNA=
 github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=