diff --git a/Assets/AsmdefHelper/CompileLocker/Editor/CompileLocker.cs b/Assets/AsmdefHelper/CompileLocker/Editor/CompileLocker.cs
index d16dc81..be48117 100644
--- a/Assets/AsmdefHelper/CompileLocker/Editor/CompileLocker.cs
+++ b/Assets/AsmdefHelper/CompileLocker/Editor/CompileLocker.cs
@@ -6,19 +6,22 @@ using UnityEditor;
 /// This editor utility can lock/unlock unity script compile from menu item.
 /// See more https://raspberly.hateblo.jp/entry/InvalidateUnityCompile
 /// </summary>
-public static class CompileLocker {
-    const string menuPath = "Window/Asmdef Helper/Compile Lock";
-    [MenuItem("Window/Asmdef Helper/Compile Lock", false, 1)]
-    static void Lock() {
-        var isLocked = Menu.GetChecked(menuPath);
-        if (isLocked) {
-            Debug.Log("Compile Unlocked");
-            EditorApplication.UnlockReloadAssemblies();
-            Menu.SetChecked(menuPath, false);
-        } else {
-            Debug.Log("Compile Locked");
-            EditorApplication.LockReloadAssemblies();
-            Menu.SetChecked(menuPath, true);
+namespace AsmdefHelper.CompileLocker.Editor {
+    public static class CompileLocker {
+        const string menuPath = "Window/Asmdef Helper/Compile Lock";
+
+        [MenuItem("Window/Asmdef Helper/Compile Lock", false, 1)]
+        static void Lock() {
+            var isLocked = Menu.GetChecked(menuPath);
+            if (isLocked) {
+                Debug.Log("Compile Unlocked");
+                EditorApplication.UnlockReloadAssemblies();
+                Menu.SetChecked(menuPath, false);
+            } else {
+                Debug.Log("Compile Locked");
+                EditorApplication.LockReloadAssemblies();
+                Menu.SetChecked(menuPath, true);
+            }
         }
     }
 }