diff --git a/Assets/UniGLTF/Runtime/UniHumanoid/AvatarDescription.cs b/Assets/UniGLTF/Runtime/UniHumanoid/AvatarDescription.cs
index bc0078197..d2bbae906 100644
--- a/Assets/UniGLTF/Runtime/UniHumanoid/AvatarDescription.cs
+++ b/Assets/UniGLTF/Runtime/UniHumanoid/AvatarDescription.cs
@@ -91,8 +91,13 @@ namespace UniHumanoid
         public bool hasTranslationDoF;
         public BoneLimit[] human;
 
-        public HumanDescription ToHumanDescription(Transform root)
+        public HumanDescription ToHumanDescription(Transform root, bool forceRename)
         {
+            if (forceRename)
+            {
+                ForceTransformUniqueName.Process(root);
+            }
+
             var transforms = root.GetComponentsInChildren<Transform>();
             var skeletonBones = new SkeletonBone[transforms.Length];
             var index = 0;
@@ -128,9 +133,7 @@ namespace UniHumanoid
 
         public Avatar CreateAvatar(Transform root)
         {
-            // force unique name
-            ForceTransformUniqueName.Validate(root);
-            return AvatarBuilder.BuildHumanAvatar(root.gameObject, ToHumanDescription(root));
+            return AvatarBuilder.BuildHumanAvatar(root.gameObject, ToHumanDescription(root, true));
         }
 
         public Avatar CreateAvatarAndSetup(Transform root)
diff --git a/Assets/UniGLTF/Runtime/Utils/ForceTransformUniqueName.cs b/Assets/UniGLTF/Runtime/Utils/ForceTransformUniqueName.cs
index 31e184f58..d3832b0f9 100644
--- a/Assets/UniGLTF/Runtime/Utils/ForceTransformUniqueName.cs
+++ b/Assets/UniGLTF/Runtime/Utils/ForceTransformUniqueName.cs
@@ -9,24 +9,6 @@ namespace UniGLTF.Utils
         HashSet<string> m_uniqueNameSet = new HashSet<string>();
         int m_counter = 1;
 
-        public static bool Validate(Transform root)
-        {
-            HashSet<string> uniqueNameSet = new HashSet<string>();
-            var transforms = root.GetComponentsInChildren<Transform>();
-            foreach (var t in transforms)
-            {
-                if (uniqueNameSet.Contains(t.name))
-                {
-                    UniGLTFLogger.Warning($"duplicate name: {t.name}");
-                }
-                else
-                {
-                    uniqueNameSet.Add(t.name);
-                }
-            }
-            return uniqueNameSet.Count == transforms.Length;
-        }
-
         public static void Process(Transform root)
         {
             var uniqueName = new ForceTransformUniqueName();
@@ -37,6 +19,13 @@ namespace UniGLTF.Utils
             }
         }
 
+        private void DoRename(Transform t, string newName)
+        {
+            UniGLTFLogger.Warning($"force rename !!: {t.name} => {newName}");
+            t.name = newName;
+            m_uniqueNameSet.Add(newName);
+        }
+
         public void RenameIfDupName(Transform t)
         {
             if (!m_uniqueNameSet.Contains(t.name))
@@ -58,9 +47,7 @@ namespace UniGLTF.Utils
                 var newName = $"{t.parent.name}-{t.name}";
                 if (!m_uniqueNameSet.Contains(newName))
                 {
-                    UniGLTFLogger.Warning($"force rename !!: {t.name} => {newName}");
-                    t.name = newName;
-                    m_uniqueNameSet.Add(newName);
+                    DoRename(t, newName);
                     return;
                 }
             }
@@ -72,9 +59,7 @@ namespace UniGLTF.Utils
                 var newName = $"{t.name}{m_counter++}";
                 if (!m_uniqueNameSet.Contains(newName))
                 {
-                    UniGLTFLogger.Warning($"force rename: {t.name} => {newName}", t);
-                    t.name = newName;
-                    m_uniqueNameSet.Add(newName);
+                    DoRename(t, newName);
                     return;
                 }
             }