diff --git a/internal/manager.go b/internal/manager.go
index 52efddce..ab7e1e84 100644
--- a/internal/manager.go
+++ b/internal/manager.go
@@ -48,8 +48,6 @@ type Manager struct {
 	openSdks   map[string]*Sdk
 	EnvManager env.Manager
 	Record     env.Record
-	osType     util.OSType
-	archType   util.ArchType
 	Config     *config.Config
 }
 
@@ -472,8 +470,6 @@ func newSdkManager(record env.Record, meta *PathMeta) *Manager {
 		EnvManager: envManger,
 		Record:     record,
 		openSdks:   make(map[string]*Sdk),
-		osType:     util.GetOSType(),
-		archType:   util.GetArchType(),
 		Config:     c,
 	}
 	return manager
diff --git a/internal/plugin.go b/internal/plugin.go
index 3214c66b..896899b5 100644
--- a/internal/plugin.go
+++ b/internal/plugin.go
@@ -337,8 +337,8 @@ func NewLuaPlugin(content, path string, manager *Manager) (*LuaPlugin, error) {
 
 	// !!!! Must be set after loading the script to prevent overwriting!
 	// set OS_TYPE and ARCH_TYPE
-	vm.Instance.SetGlobal(OsType, lua.LString(manager.osType))
-	vm.Instance.SetGlobal(ArchType, lua.LString(manager.archType))
+	vm.Instance.SetGlobal(OsType, lua.LString(util.GetOSType()))
+	vm.Instance.SetGlobal(ArchType, lua.LString(util.GetArchType()))
 
 	pluginObj := vm.Instance.GetGlobal(LuaPluginObjKey)
 	if pluginObj.Type() == lua.LTNil {
diff --git a/internal/util/os.go b/internal/util/os.go
deleted file mode 100644
index 191a812d..00000000
--- a/internal/util/os.go
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *    Copyright 2024 Han Li and contributors
- *
- *    Licensed under the Apache License, Version 2.0 (the "License");
- *    you may not use this file except in compliance with the License.
- *    You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *    Unless required by applicable law or agreed to in writing, software
- *    distributed under the License is distributed on an "AS IS" BASIS,
- *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *    See the License for the specific language governing permissions and
- *    limitations under the License.
- */
-
-package util
-
-import "runtime"
-
-type OSType string
-
-const (
-	MacOS   OSType = "darwin"
-	Windows OSType = "windows"
-	Linux   OSType = "linux"
-)
-
-func GetOSType() OSType {
-	switch runtime.GOOS {
-	case "darwin":
-		return MacOS
-	case "windows":
-		return Windows
-	case "linux":
-		return Linux
-	default:
-		return OSType(runtime.GOOS)
-	}
-}
diff --git a/internal/util/arch.go b/internal/util/runtime.go
similarity index 76%
rename from internal/util/arch.go
rename to internal/util/runtime.go
index f88d2250..11c686aa 100644
--- a/internal/util/arch.go
+++ b/internal/util/runtime.go
@@ -18,20 +18,15 @@ package util
 
 import "runtime"
 
-type ArchType string
-
-const (
-	AMD64 ArchType = "amd64"
-	ARM64 ArchType = "arm64"
+type (
+	OSType   string
+	ArchType string
 )
 
+func GetOSType() OSType {
+	return OSType(runtime.GOOS)
+}
+
 func GetArchType() ArchType {
-	switch runtime.GOARCH {
-	case "amd64":
-		return AMD64
-	case "arm64":
-		return ARM64
-	default:
-		return ArchType(runtime.GOARCH)
-	}
+	return ArchType(runtime.GOARCH)
 }