diff --git a/Assets/VRMShaders/GLTF/IO/Editor/EditorTextureSerializer.cs b/Assets/VRMShaders/GLTF/IO/Editor/EditorTextureSerializer.cs
index 0314c451c..3e5134b74 100644
--- a/Assets/VRMShaders/GLTF/IO/Editor/EditorTextureSerializer.cs
+++ b/Assets/VRMShaders/GLTF/IO/Editor/EditorTextureSerializer.cs
@@ -19,7 +19,7 @@ namespace VRMShaders
         /// * TextureImporter の maxSize
         ///
         /// </summary>
-        public bool CanExportAsEditorAssetFile(Texture texture)
+        public bool CanExportAsEditorAssetFile(Texture texture, ColorSpace exportColorSpace)
         {
             if (texture is Texture2D texture2D && !string.IsNullOrEmpty(UnityEditor.AssetDatabase.GetAssetPath(texture2D)))
             {
@@ -42,14 +42,14 @@ namespace VRMShaders
             return false;
         }
 
-        public (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace textureColorSpace)
+        public (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace exportColorSpace)
         {
-            if (CanExportAsEditorAssetFile(texture) && TryGetBytesWithMime(texture, out byte[] bytes, out string mime))
+            if (CanExportAsEditorAssetFile(texture, exportColorSpace) && TryGetBytesWithMime(texture, out byte[] bytes, out string mime))
             {
                 return (bytes, mime);
             }
 
-            return m_runtimeSerializer.ExportBytesWithMime(texture, textureColorSpace);
+            return m_runtimeSerializer.ExportBytesWithMime(texture, exportColorSpace);
         }
 
         /// <summary>
diff --git a/Assets/VRMShaders/GLTF/IO/Runtime/ITextureSerializer.cs b/Assets/VRMShaders/GLTF/IO/Runtime/ITextureSerializer.cs
index ac26d6c74..de5e77554 100644
--- a/Assets/VRMShaders/GLTF/IO/Runtime/ITextureSerializer.cs
+++ b/Assets/VRMShaders/GLTF/IO/Runtime/ITextureSerializer.cs
@@ -10,16 +10,17 @@ namespace UniGLTF
         /// <summary>
         /// Texture をファイルのバイト列そのまま出力してよいかどうか判断する。
         ///
+        /// exportColorSpace はその Texture2D がアサインされる glTF プロパティの仕様が定める色空間を指定する。
         /// Runtime 出力では常に false が望ましい。
         /// </summary>
-        bool CanExportAsEditorAssetFile(Texture texture);
+        bool CanExportAsEditorAssetFile(Texture texture, ColorSpace exportColorSpace);
 
         /// <summary>
         /// Texture2D から実際のバイト列を取得する。
         ///
-        /// textureColorSpace はその Texture2D がアサインされる glTF プロパティの仕様が定める色空間を指定する。
+        /// exportColorSpace はその Texture2D がアサインされる glTF プロパティの仕様が定める色空間を指定する。
         /// 具体的には Texture2D をコピーする際に、コピー先の Texture2D の色空間を決定するために使用する。
         /// </summary>
-        (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace textureColorSpace);
+        (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace exportColorSpace);
     }
 }
diff --git a/Assets/VRMShaders/GLTF/IO/Runtime/RuntimeTextureSerializer.cs b/Assets/VRMShaders/GLTF/IO/Runtime/RuntimeTextureSerializer.cs
index 0126c5395..d90f830b0 100644
--- a/Assets/VRMShaders/GLTF/IO/Runtime/RuntimeTextureSerializer.cs
+++ b/Assets/VRMShaders/GLTF/IO/Runtime/RuntimeTextureSerializer.cs
@@ -6,12 +6,12 @@ namespace UniGLTF
 {
     public sealed class RuntimeTextureSerializer : ITextureSerializer
     {
-        public bool CanExportAsEditorAssetFile(Texture texture)
+        public bool CanExportAsEditorAssetFile(Texture texture, ColorSpace exportColorSpace)
         {
             return false;
         }
 
-        public (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace textureColorSpace)
+        public (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace exportColorSpace)
         {
             try
             {
@@ -24,7 +24,7 @@ namespace UniGLTF
                 {
                     // Failed, because texture is compressed.
                     // ex. ".DDS" file, or Compression is enabled in Texture Import Settings.
-                    return CopyTextureAndGetBytesWithMime(texture, textureColorSpace);
+                    return CopyTextureAndGetBytesWithMime(texture, exportColorSpace);
                 }
             }
             catch (ArgumentException ex)
@@ -35,7 +35,7 @@ namespace UniGLTF
                 Debug.LogWarning(ex);
 
                 // 単純に EncodeToPNG できないため、コピーしてから EncodeToPNG する。
-                return CopyTextureAndGetBytesWithMime(texture, textureColorSpace);
+                return CopyTextureAndGetBytesWithMime(texture, exportColorSpace);
             }
         }
 
diff --git a/Assets/VRMShaders/GLTF/IO/Runtime/TextureExporter.cs b/Assets/VRMShaders/GLTF/IO/Runtime/TextureExporter.cs
index 5688362c4..69d45553a 100644
--- a/Assets/VRMShaders/GLTF/IO/Runtime/TextureExporter.cs
+++ b/Assets/VRMShaders/GLTF/IO/Runtime/TextureExporter.cs
@@ -78,7 +78,7 @@ namespace VRMShaders
             // get Texture2D
             index = m_exported.Count;
             var texture2D = src as Texture2D;
-            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2D))
+            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2D, ColorSpace.sRGB))
             {
                 // do nothing
             }
@@ -114,7 +114,7 @@ namespace VRMShaders
 
             index = m_exported.Count;
             var texture2d = src as Texture2D;
-            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2d))
+            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2d, ColorSpace.Linear))
             {
                 // do nothing
             }
@@ -193,7 +193,7 @@ namespace VRMShaders
             // get Texture2D
             index = m_exported.Count;
             var texture2D = src as Texture2D;
-            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2D))
+            if (m_textureSerializer.CanExportAsEditorAssetFile(texture2D, ColorSpace.Linear))
             {
                 // EditorAsset を使うので変換不要
             }