diff --git a/Assets/VRM/Runtime/FirstPerson/VRMFirstPerson.cs b/Assets/VRM/Runtime/FirstPerson/VRMFirstPerson.cs
index 4bd4ff060..9f0ba8865 100644
--- a/Assets/VRM/Runtime/FirstPerson/VRMFirstPerson.cs
+++ b/Assets/VRM/Runtime/FirstPerson/VRMFirstPerson.cs
@@ -57,7 +57,22 @@ namespace VRM
             var dst = _dst.AddComponent<VRMFirstPerson>();
             dst.FirstPersonBone = map[FirstPersonBone];
             dst.FirstPersonOffset = FirstPersonOffset;
-            dst.Renderers = Renderers.Select(x =>
+            dst.Renderers = Renderers
+            .Where(x =>
+            {
+                if (x.Renderer == null || x.Renderer.transform == null)
+                {
+                    Debug.LogWarning("[VRMFirstPerson] Renderer is null", this);
+                    return false;
+                }
+                if (!map.ContainsKey(x.Renderer.transform))
+                {
+                    Debug.LogWarning("[VRMFirstPerson] Cannot copy. Not found ?", this);
+                    return false;
+                }
+                return true;
+            })
+            .Select(x =>
             {
                 var mapped = map[x.Renderer.transform];
                 var renderer = mapped.GetComponent<Renderer>();