diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/UnityPath.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/UnityPath.cs
index 70876d1f5..8e051c001 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/UnityPath.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/UnityPath.cs
@@ -40,7 +40,8 @@ namespace UniGLTF
         }
 
         /// <summary>
-        /// If under Assets or under an editable Package return true
+        /// If under Assets or under an editable Package return true.
+        /// For historical reasons "Assets" is true.
         /// </summary>
         public bool IsUnderWritableFolder
         {
@@ -152,13 +153,18 @@ namespace UniGLTF
         {
             get
             {
-                if (string.IsNullOrEmpty(Value)) return PathType.Unsuported;
+                if (string.IsNullOrEmpty(Value))
+                {
+                    return PathType.Unsupported;
+                }
+                if (Value == "Assets" || Value.FastStartsWith("Assets/"))
+                {
+                    // #1941
+                    return PathType.Assets;
+                }
 
                 var directory = Path.GetDirectoryName(Value);
-                if (string.IsNullOrEmpty(directory)) return PathType.Unsuported;
-
                 var rootDirectoryName = directory.Split(Path.DirectorySeparatorChar);
-
                 switch (rootDirectoryName[0])
                 {
                     case "Assets":
@@ -166,7 +172,7 @@ namespace UniGLTF
                     case "Packages":
                         return PathType.Packages;
                     default:
-                        return PathType.Unsuported;
+                        return PathType.Unsupported;
                 }
             }
         }
@@ -531,6 +537,6 @@ namespace UniGLTF
     {
         Assets,
         Packages,
-        Unsuported,
+        Unsupported,
     }
 }
diff --git a/Assets/UniGLTF/Tests/UniGLTF/UniGLTFTests.cs b/Assets/UniGLTF/Tests/UniGLTF/UniGLTFTests.cs
index 14692ee7f..71b44cdcc 100644
--- a/Assets/UniGLTF/Tests/UniGLTF/UniGLTFTests.cs
+++ b/Assets/UniGLTF/Tests/UniGLTF/UniGLTFTests.cs
@@ -159,6 +159,7 @@ namespace UniGLTF
         }
 
         [Test]
+        [Category("UnityPath")]
         public void UnityPathTest()
         {
             // 不正なパス
@@ -215,6 +216,32 @@ namespace UniGLTF
             //var children = root.TraverseDir().ToArray();
         }
 
+        [Test]
+        [Category("UnityPath")]
+        [TestCase("", PathType.Unsupported)]
+        [TestCase("Assets", PathType.Assets)]
+        [TestCase("Assets/何らかの/パス", PathType.Assets)]
+        [TestCase("Packages", PathType.Unsupported)]
+        [TestCase("Packages/ローカルパッケージ", PathType.Packages)]
+        public void UnityPathPathType(string path, PathType pathType)
+        {
+            var assets = UnityPath.FromUnityPath(path);
+            Assert.AreEqual(pathType, assets.PathType);
+        }
+
+        [Test]
+        [Category("UnityPath")]
+        [TestCase("", false)]
+        [TestCase("Assets", true)]
+        [TestCase("Assets/何らかの/パス", true)]
+        [TestCase("Packages", false)]
+        // [TestCase("Packages/存在するローカルパッケージ", true)]
+        public void UnityPathWritableTest(string path, bool expected)
+        {
+            var assets = UnityPath.FromUnityPath(path);
+            Assert.AreEqual(expected, assets.IsUnderWritableFolder);
+        }
+
         [Test]
         public void VersionChecker()
         {