diff --git a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GlbScriptedImporter.cs b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GlbScriptedImporter.cs
index bb996f84e..cfafbec45 100644
--- a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GlbScriptedImporter.cs
+++ b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GlbScriptedImporter.cs
@@ -12,7 +12,7 @@ namespace UniGLTF
     {
         public override void OnImportAsset(AssetImportContext ctx)
         {
-            Import(this, ctx, m_reverseAxis.ToAxes(), m_useURPMaterial);
+            Import(this, ctx, m_reverseAxis.ToAxes(), m_useUrpMaterial);
         }
     }
 }
diff --git a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporter.cs b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporter.cs
index 1a6df70c2..97a08b914 100644
--- a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporter.cs
+++ b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporter.cs
@@ -12,7 +12,7 @@ namespace UniGLTF
     {
         public override void OnImportAsset(AssetImportContext ctx)
         {
-            Import(this, ctx, m_reverseAxis.ToAxes(), m_useURPMaterial);
+            Import(this, ctx, m_reverseAxis.ToAxes(), m_useUrpMaterial);
         }
     }
 }
diff --git a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporterBase.cs b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporterBase.cs
index 9ce13fe48..b1bf91d3b 100644
--- a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporterBase.cs
+++ b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/GltfScriptedImporterBase.cs
@@ -21,13 +21,13 @@ namespace UniGLTF
         public ScriptedImporterAxes m_reverseAxis = default;
 
         [SerializeField]
-        public bool m_useURPMaterial;
+        public bool m_useUrpMaterial;
 
-        static IMaterialDescriptorGenerator GetMaterialGenerator(bool useURPMaterial)
+        static IMaterialDescriptorGenerator GetMaterialGenerator(bool useUrpMaterial)
         {
-            if (useURPMaterial)
+            if (useUrpMaterial)
             {
-                return new GltfURPMaterialDescriptorGenerator();
+                return new GltfUrpMaterialDescriptorGenerator();
             }
             else
             {
@@ -41,7 +41,7 @@ namespace UniGLTF
         /// <param name="scriptedImporter"></param>
         /// <param name="context"></param>
         /// <param name="reverseAxis"></param>
-        protected static void Import(ScriptedImporter scriptedImporter, AssetImportContext context, Axes reverseAxis, bool useURPMaterial)
+        protected static void Import(ScriptedImporter scriptedImporter, AssetImportContext context, Axes reverseAxis, bool useUrpMaterial)
         {
 #if VRM_DEVELOP
             Debug.Log("OnImportAsset to " + scriptedImporter.assetPath);
@@ -62,7 +62,7 @@ namespace UniGLTF
                 .Where(x => x.Value != null)
                 .ToDictionary(kv => new SubAssetKey(kv.Value.GetType(), kv.Key.name), kv => kv.Value);
 
-            IMaterialDescriptorGenerator materialGenerator = GetMaterialGenerator(useURPMaterial);
+            IMaterialDescriptorGenerator materialGenerator = GetMaterialGenerator(useUrpMaterial);
 
             using (var loader = new ImporterContext(data, extractedObjects, materialGenerator: materialGenerator))
             {
diff --git a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/ZipArchivedGltfScriptedImporter.cs b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/ZipArchivedGltfScriptedImporter.cs
index 719b1995a..0ed65d3f7 100644
--- a/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/ZipArchivedGltfScriptedImporter.cs
+++ b/Assets/UniGLTF/Editor/UniGLTF/ScriptedImporter/ZipArchivedGltfScriptedImporter.cs
@@ -14,7 +14,7 @@ namespace UniGLTF
     {
         public override void OnImportAsset(AssetImportContext ctx)
         {
-            Import(this, ctx, m_reverseAxis.ToAxes(), m_useURPMaterial);
+            Import(this, ctx, m_reverseAxis.ToAxes(), m_useUrpMaterial);
         }
     }
 }
diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfPbrURPMaterialImporter.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfPbrURPMaterialImporter.cs
index 7276126c7..93c8d7a31 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfPbrURPMaterialImporter.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfPbrURPMaterialImporter.cs
@@ -9,7 +9,7 @@ namespace UniGLTF
     /// 
     /// see: https://github.com/Unity-Technologies/Graphics/blob/v7.5.3/com.unity.render-pipelines.universal/Editor/UniversalRenderPipelineMaterialUpgrader.cs#L354-L379
     /// </summary>
-    public static class GltfPbrURPMaterialImporter
+    public static class GltfPbrUrpMaterialImporter
     {
         public const string ShaderName = "Universal Render Pipeline/Lit";
 
diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfURPMaterialDescriptorGenerator.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfURPMaterialDescriptorGenerator.cs
index 479ad31cb..e5422ae9a 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfURPMaterialDescriptorGenerator.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/URP/GltfURPMaterialDescriptorGenerator.cs
@@ -8,13 +8,13 @@ namespace UniGLTF
     /// <summary>
     /// GLTF の MaterialImporter
     /// </summary>
-    public sealed class GltfURPMaterialDescriptorGenerator : IMaterialDescriptorGenerator
+    public sealed class GltfUrpMaterialDescriptorGenerator : IMaterialDescriptorGenerator
     {
         public MaterialDescriptor Get(GltfData data, int i)
         {
             if (!GltfUnlitMaterialImporter.TryCreateParam(data, i, out var param))
             {
-                if (!GltfPbrURPMaterialImporter.TryCreateParam(data, i, out param))
+                if (!GltfPbrUrpMaterialImporter.TryCreateParam(data, i, out param))
                 {
                     // fallback
 #if VRM_DEVELOP
diff --git a/Assets/VRM/Runtime/IO/VRMURPMaterialDescriptorGenerator.cs b/Assets/VRM/Runtime/IO/VRMURPMaterialDescriptorGenerator.cs
index a3661a255..376198d32 100644
--- a/Assets/VRM/Runtime/IO/VRMURPMaterialDescriptorGenerator.cs
+++ b/Assets/VRM/Runtime/IO/VRMURPMaterialDescriptorGenerator.cs
@@ -4,10 +4,10 @@ using VRMShaders;
 
 namespace VRM
 {
-    public sealed class VRMURPMaterialDescriptorGenerator : IMaterialDescriptorGenerator
+    public sealed class VRMUrpMaterialDescriptorGenerator : IMaterialDescriptorGenerator
     {
         readonly glTF_VRM_extensions m_vrm;
-        public VRMURPMaterialDescriptorGenerator(glTF_VRM_extensions vrm)
+        public VRMUrpMaterialDescriptorGenerator(glTF_VRM_extensions vrm)
         {
             m_vrm = vrm;
         }
@@ -19,7 +19,7 @@ namespace VRM
             if (!GltfUnlitMaterialImporter.TryCreateParam(data, i, out MaterialDescriptor matDesc))
             {
                 // pbr "Standard" to "Universal Render Pipeline/Lit" 
-                if (!GltfPbrURPMaterialImporter.TryCreateParam(data, i, out matDesc))
+                if (!GltfPbrUrpMaterialImporter.TryCreateParam(data, i, out matDesc))
                 {
                     // fallback
 #if VRM_DEVELOP
diff --git a/Assets/VRM10/Runtime/IO/Material/Vrm10UrpMaterialDescriptorGenerator.cs b/Assets/VRM10/Runtime/IO/Material/Vrm10UrpMaterialDescriptorGenerator.cs
index 2082d1d07..f2844cfbe 100644
--- a/Assets/VRM10/Runtime/IO/Material/Vrm10UrpMaterialDescriptorGenerator.cs
+++ b/Assets/VRM10/Runtime/IO/Material/Vrm10UrpMaterialDescriptorGenerator.cs
@@ -12,7 +12,7 @@ namespace UniVRM10
             if (!GltfUnlitMaterialImporter.TryCreateParam(data, i, out MaterialDescriptor matDesc))
             {
                 // pbr
-                if (!GltfPbrURPMaterialImporter.TryCreateParam(data, i, out matDesc))
+                if (!GltfPbrUrpMaterialImporter.TryCreateParam(data, i, out matDesc))
                 {
                     // fallback
 #if VRM_DEVELOP