diff --git a/Packages/nadena.dev.modular-avatar/Runtime/Activator.cs b/Packages/nadena.dev.modular-avatar/Runtime/Activator.cs
index 2894555f..369be35b 100644
--- a/Packages/nadena.dev.modular-avatar/Runtime/Activator.cs
+++ b/Packages/nadena.dev.modular-avatar/Runtime/Activator.cs
@@ -58,6 +58,8 @@ namespace nadena.dev.modular_avatar.core
         {
             EditorApplication.delayCall += () =>
             {
+                if (this == null) return;
+
                 gameObject.hideFlags = HideFlags.HideInHierarchy;
                 if (!HasMAComponentsInScene())
                 {