diff --git a/Assets/VRM10/Tests/MigrationTests.cs b/Assets/VRM10/Tests/MigrationTests.cs
index 4e73823da..1fcc93f4f 100644
--- a/Assets/VRM10/Tests/MigrationTests.cs
+++ b/Assets/VRM10/Tests/MigrationTests.cs
@@ -220,24 +220,36 @@ namespace UniVRM10
         [Test]
         public void Migrate_SpringBoneTest()
         {
-            const float VALUE = -0.0359970331f;
+            //
+            // vrm0 のオリジナルの値
+            //
+            var VALUE = new Vector3(-0.0359970331f, -0.0188314915f, 0.00566166639f);
             var parser0 = new GltfParser();
             var bytes0 = File.ReadAllBytes(AliciaPath);
             parser0.Parse(AliciaPath, bytes0);
             var json0 = parser0.Json.ParseAsJson();
-            var x = json0["extensions"]["VRM"]["secondaryAnimation"]["colliderGroups"][3]["colliders"][0]["offset"]["x"].GetSingle();
-            Assert.AreEqual(VALUE, x);
+            var colliderIndex = json0["extensions"]["VRM"]["secondaryAnimation"]["boneGroups"][0]["colliderGroups"][0].GetInt32();
+            var x = json0["extensions"]["VRM"]["secondaryAnimation"]["colliderGroups"][colliderIndex]["colliders"][0]["offset"]["x"].GetSingle();
+            var y = json0["extensions"]["VRM"]["secondaryAnimation"]["colliderGroups"][colliderIndex]["colliders"][0]["offset"]["y"].GetSingle();
+            var z = json0["extensions"]["VRM"]["secondaryAnimation"]["colliderGroups"][colliderIndex]["colliders"][0]["offset"]["z"].GetSingle();
+            Assert.AreEqual(VALUE.x, x);
+            Assert.AreEqual(VALUE.y, y);
+            Assert.AreEqual(VALUE.z, z);
 
+            //
+            // vrm1 に migrate
+            //
             var bytes1 = MigrationVrm.Migrate(bytes0);
             var parser1 = new GltfParser();
             parser1.Parse(AliciaPath, bytes1);
-
             Assert.True(UniGLTF.Extensions.VRMC_springBone.GltfDeserializer.TryGet(parser1.GLTF.extensions, out UniGLTF.Extensions.VRMC_springBone.VRMC_springBone springBone));
             var spring = springBone.Springs[0];
             var colliderNodeIndex = spring.Colliders[0];
-
             Assert.True(UniGLTF.Extensions.VRMC_node_collider.GltfDeserializer.TryGet(parser1.GLTF.nodes[colliderNodeIndex].extensions, out UniGLTF.Extensions.VRMC_node_collider.VRMC_node_collider colliderGroup));
-            Assert.AreEqual(-VALUE, colliderGroup.Shapes[0].Sphere.Offset[0]);
+            // x軸だけが反転する
+            Assert.AreEqual(-VALUE.x, colliderGroup.Shapes[0].Sphere.Offset[0]);
+            Assert.AreEqual(VALUE.y, colliderGroup.Shapes[0].Sphere.Offset[1]);
+            Assert.AreEqual(VALUE.z, colliderGroup.Shapes[0].Sphere.Offset[2]);
         }
     }
 }