diff --git a/cmd/protoc-gen-go-errors/errors.go b/cmd/protoc-gen-go-errors/errors.go
index db5e51952..a827c0719 100644
--- a/cmd/protoc-gen-go-errors/errors.go
+++ b/cmd/protoc-gen-go-errors/errors.go
@@ -4,6 +4,9 @@ import (
 	"fmt"
 	"strings"
 
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
+
 	"github.com/go-kratos/kratos/cmd/protoc-gen-go-errors/v2/errors"
 	"google.golang.org/protobuf/compiler/protogen"
 	"google.golang.org/protobuf/proto"
@@ -14,6 +17,8 @@ const (
 	fmtPackage    = protogen.GoImportPath("fmt")
 )
 
+var enCases = cases.Title(language.AmericanEnglish)
+
 // generateFile generates a _errors.pb.go file containing kratos errors definitions.
 func generateFile(gen *protogen.Plugin, file *protogen.File) *protogen.GeneratedFile {
 	if len(file.Enums) == 0 {
@@ -98,10 +103,10 @@ func case2Camel(name string) string {
 		if upperName == name {
 			name = strings.ToLower(name)
 		}
-		return strings.Title(name)
+		return enCases.String(name)
 	}
 	name = strings.ToLower(name)
 	name = strings.Replace(name, "_", " ", -1)
-	name = strings.Title(name)
+	name = enCases.String(name)
 	return strings.Replace(name, " ", "", -1)
 }
diff --git a/cmd/protoc-gen-go-errors/go.mod b/cmd/protoc-gen-go-errors/go.mod
index 423d91c8e..4661ee6a4 100644
--- a/cmd/protoc-gen-go-errors/go.mod
+++ b/cmd/protoc-gen-go-errors/go.mod
@@ -2,4 +2,7 @@ module github.com/go-kratos/kratos/cmd/protoc-gen-go-errors/v2
 
 go 1.16
 
-require google.golang.org/protobuf v1.27.1
+require (
+	golang.org/x/text v0.3.7 // indirect
+	google.golang.org/protobuf v1.27.1
+)
diff --git a/cmd/protoc-gen-go-errors/go.sum b/cmd/protoc-gen-go-errors/go.sum
index 03b1917b5..5146f899e 100644
--- a/cmd/protoc-gen-go-errors/go.sum
+++ b/cmd/protoc-gen-go-errors/go.sum
@@ -1,6 +1,9 @@
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=