diff --git a/Megumin.UnityPackage/Packages/megumin.explosion4unity/Runtime/Scripts/NewClass/Debug/UnityTraceListener.cs b/Megumin.UnityPackage/Packages/megumin.explosion4unity/Runtime/Scripts/NewClass/Debug/UnityTraceListener.cs
index d56cc1a..452401c 100644
--- a/Megumin.UnityPackage/Packages/megumin.explosion4unity/Runtime/Scripts/NewClass/Debug/UnityTraceListener.cs
+++ b/Megumin.UnityPackage/Packages/megumin.explosion4unity/Runtime/Scripts/NewClass/Debug/UnityTraceListener.cs
@@ -1,4 +1,6 @@
-using System;
+#if !MEGUMIN_Common
+
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -79,4 +81,4 @@ public override void Fail(string message)
     }
 }
 
-
+#endif