diff --git a/Assets/VRM10/Tests/ExpressionTests.cs b/Assets/VRM10/Tests/ExpressionTests.cs
index 5d2a86592..2095f4438 100644
--- a/Assets/VRM10/Tests/ExpressionTests.cs
+++ b/Assets/VRM10/Tests/ExpressionTests.cs
@@ -1,4 +1,3 @@
-using System.IO;
 using System.Linq;
 using NUnit.Framework;
 using UnityEngine;
@@ -7,34 +6,10 @@ namespace UniVRM10.Test
 {
     public class ExpressionTests
     {
-        static string AliciaPath
-        {
-            get
-            {
-                return Path.GetFullPath(Application.dataPath + "/../Tests/Models/Alicia_vrm-0.51/AliciaSolid_vrm-0.51.vrm")
-                    .Replace("\\", "/");
-            }
-        }
-
-        static VRM10Controller Load()
-        {
-            Vrm10Data.TryParseOrMigrate(AliciaPath, true, out Vrm10Data vrm);
-            using (var loader = new Vrm10Importer(vrm))
-            {
-                var task = loader.LoadAsync(new VRMShaders.ImmediateCaller());
-                task.Wait();
-
-                var instance = task.Result;
-
-                return instance.GetComponent<VRM10Controller>();
-            }
-
-        }
-
         [Test]
         public void DuplicatedMaterialColorBindings()
         {
-            var controller = Load();
+            var controller = TestAsset.LoadAlicia();
 
             var src = controller.Vrm.Expression.Aa.MaterialColorBindings.ToList();
 
@@ -63,7 +38,7 @@ namespace UniVRM10.Test
         [Test]
         public void DuplicatedMaterialUVBindings()
         {
-            var controller = Load();
+            var controller = TestAsset.LoadAlicia();
 
             var renderers = controller.GetComponentsInChildren<Renderer>();
             var name = renderers[0].sharedMaterials[0].name;
diff --git a/Assets/VRM10/Tests/LoadTests.cs b/Assets/VRM10/Tests/LoadTests.cs
new file mode 100644
index 000000000..4f88785ef
--- /dev/null
+++ b/Assets/VRM10/Tests/LoadTests.cs
@@ -0,0 +1,23 @@
+using NUnit.Framework;
+
+namespace UniVRM10.Test
+{
+    public class LoadTests
+    {
+        [Test]
+        public void EmptyThumbnailName()
+        {
+            Assert.True(Vrm10Data.TryParseOrMigrate(TestAsset.AliciaPath, true, out Vrm10Data vrm));
+
+            var index = vrm.VrmExtension.Meta.ThumbnailImage.Value;
+
+            // empty thumbnail name
+            vrm.Data.GLTF.images[index].name = null;
+
+            using (var loader = new Vrm10Importer(vrm))
+            {
+                loader.LoadAsync(new VRMShaders.ImmediateCaller()).Wait();
+            }
+        }
+    }
+}
diff --git a/Assets/VRM10/Tests/LoadTests.cs.meta b/Assets/VRM10/Tests/LoadTests.cs.meta
new file mode 100644
index 000000000..2dc13ac5f
--- /dev/null
+++ b/Assets/VRM10/Tests/LoadTests.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c9a9a3ce2deae9c4791d816aa189df3d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10/Tests/TestAsset.cs b/Assets/VRM10/Tests/TestAsset.cs
new file mode 100644
index 000000000..a9ef5e72c
--- /dev/null
+++ b/Assets/VRM10/Tests/TestAsset.cs
@@ -0,0 +1,31 @@
+using System.IO;
+using UnityEngine;
+
+namespace UniVRM10
+{
+    public static class TestAsset
+    {
+        public static string AliciaPath
+        {
+            get
+            {
+                return Path.GetFullPath(Application.dataPath + "/../Tests/Models/Alicia_vrm-0.51/AliciaSolid_vrm-0.51.vrm")
+                    .Replace("\\", "/");
+            }
+        }
+
+        public static VRM10Controller LoadAlicia()
+        {
+            Vrm10Data.TryParseOrMigrate(AliciaPath, true, out Vrm10Data vrm);
+            using (var loader = new Vrm10Importer(vrm))
+            {
+                var task = loader.LoadAsync(new VRMShaders.ImmediateCaller());
+                task.Wait();
+
+                var instance = task.Result;
+
+                return instance.GetComponent<VRM10Controller>();
+            }
+        }
+    }
+}
diff --git a/Assets/VRM10/Tests/TestAsset.cs.meta b/Assets/VRM10/Tests/TestAsset.cs.meta
new file mode 100644
index 000000000..f9145dda7
--- /dev/null
+++ b/Assets/VRM10/Tests/TestAsset.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b18f57dcd7d3c19469aa4842b2ee6ae1
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: