diff --git a/Assets/uDesktopMascot/Editor/PostBuildProcessor.cs b/Assets/uDesktopMascot/Editor/PostBuildProcessor.cs
index 01c684bc..7d94a4b1 100644
--- a/Assets/uDesktopMascot/Editor/PostBuildProcessor.cs
+++ b/Assets/uDesktopMascot/Editor/PostBuildProcessor.cs
@@ -8,6 +8,10 @@
 using UnityEditor.Build.Reporting;
 using System.Collections.Generic;
 using UnityEngine;
+
+#if UNITY_EDITOR_OSX
+using System.Runtime.InteropServices;
+#endif
 using CompressionLevel = System.IO.Compression.CompressionLevel;
 
 namespace uDesktopMascot.Editor