diff --git a/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizard.cs b/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizard.cs
index 46d4d8dbed..5a9bbd5cd0 100644
--- a/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizard.cs
+++ b/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizard.cs
@@ -706,6 +706,11 @@ void OnWizardUpdate()
             m_validations.Clear();
             m_validations.AddRange(Validate());
             m_validations.AddRange(VRMSpringBoneValidator.Validate(ExportRoot));
+            var firstPerson = ExportRoot.GetComponent<VRMFirstPerson>();
+            if (firstPerson != null)
+            {
+                m_validations.AddRange(firstPerson.Validate());
+            }
             var hasError = m_validations.Any(x => !x.CanExport);
             m_IsValid = !hasError && !MetaHasError;
 
diff --git a/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizardMessages.cs b/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizardMessages.cs
index 16f4c53ba9..9cc63ecf02 100644
--- a/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizardMessages.cs
+++ b/Assets/VRM/UniVRM/Editor/Format/VRMExporterWizardMessages.cs
@@ -49,7 +49,7 @@ public enum VRMExporterWizardMessages
         [LangMsg(Languages.en, "Animator.avatar is not humanoid. Please change model's AnimationType to humanoid")]
         AVATAR_IS_NOT_HUMANOID,
 
-        [LangMsg(Languages.ja, "humanoid設定に顎が含まれている。FBX importer の rig 設定に戻って設定を解除することをおすすめします")]
+        [LangMsg(Languages.ja, "humanoid設定に顎が含まれている。FBX importer の rig 設定で顎ボーンの割り当てを確認できます")]
         [LangMsg(Languages.en, "Jaw bone is included. It may not what you intended. Please check the humanoid avatar setting screen")]
         JAW_BONE_IS_INCLUDED,
 
diff --git a/Assets/VRM/UniVRM/Editor/SpringBone/VRMSpringBoneValidator.cs b/Assets/VRM/UniVRM/Editor/SpringBone/VRMSpringBoneValidator.cs
index d4abef4407..e552b5696f 100644
--- a/Assets/VRM/UniVRM/Editor/SpringBone/VRMSpringBoneValidator.cs
+++ b/Assets/VRM/UniVRM/Editor/SpringBone/VRMSpringBoneValidator.cs
@@ -14,12 +14,26 @@ public static IEnumerable<Validation> Validate(GameObject root)
                 yield break;
             }
 
+            var hierarchy = root.GetComponentsInChildren<Transform>();
+
             Dictionary<Transform, List<VRMSpringBone>> rootMap = new Dictionary<Transform, List<VRMSpringBone>>();
 
             foreach (var sb in root.GetComponentsInChildren<VRMSpringBone>())
             {
-                foreach (var springRoot in sb.RootBones)
+                for (int i = 0; i < sb.RootBones.Count; ++i)
                 {
+                    var springRoot = sb.RootBones[i];
+                    if (springRoot == null)
+                    {
+                        yield return Validation.Error($"{sb.name}.RootBones[{i}] is null");
+                        continue;
+                    }
+                    if (!hierarchy.Contains(springRoot))
+                    {
+                        yield return Validation.Error($"{sb.name}.RootBones[{i}] is out of hierarchy");
+                        continue;
+                    }
+
                     if (!rootMap.TryGetValue(springRoot, out List<VRMSpringBone> list))
                     {
                         list = new List<VRMSpringBone>();
@@ -27,6 +41,21 @@ public static IEnumerable<Validation> Validate(GameObject root)
                     }
                     list.Add(sb);
                 }
+
+                for (int i = 0; i < sb.ColliderGroups.Length; ++i)
+                {
+                    var c = sb.ColliderGroups[i];
+                    if (c == null)
+                    {
+                        yield return Validation.Error($"{sb.name}.ColliderGroups[{i}] is null");
+                        continue;
+                    }
+                    if (!hierarchy.Contains(c.transform))
+                    {
+                        yield return Validation.Error($"{sb.name}.ColliderGroups[{i}] is out of hierarchy");
+                        continue;
+                    }
+                }
             }
 
             foreach (var kv in rootMap)
diff --git a/Assets/VRM/UniVRM/Scripts/FirstPerson/VRMFirstPerson.cs b/Assets/VRM/UniVRM/Scripts/FirstPerson/VRMFirstPerson.cs
index 7777830494..11b59375cb 100644
--- a/Assets/VRM/UniVRM/Scripts/FirstPerson/VRMFirstPerson.cs
+++ b/Assets/VRM/UniVRM/Scripts/FirstPerson/VRMFirstPerson.cs
@@ -50,17 +50,23 @@ public Mesh SharedMesh
         [SerializeField]
         public List<RendererFirstPersonFlags> Renderers = new List<RendererFirstPersonFlags>();
 
-        static IEnumerable<Transform> Traverse(Transform parent)
+        public IEnumerable<Validation> Validate()
         {
-            yield return parent;
+            var hierarchy = GetComponentsInChildren<Transform>();
 
-            foreach (Transform child in parent)
+            for (int i = 0; i < Renderers.Count; ++i)
             {
-                foreach (var x in Traverse(child))
+                var r = Renderers[i];
+                if (r.Renderer == null)
                 {
-                    yield return x;
+                    yield return Validation.Error($"{name}.Renderers[{i}].Renderer is null");
+                }
+                if (!hierarchy.Contains(r.Renderer.transform))
+                {
+                    yield return Validation.Error($"{name}.Renderers[{i}].Renderer is out of hierarchy");
                 }
             }
+            yield break;
         }
 
         public void CopyTo(GameObject _dst, Dictionary<Transform, Transform> map)