diff --git a/Packages/VRM10/Runtime/Components/Vrm10Instance/Vrm10Instance.cs b/Packages/VRM10/Runtime/Components/Vrm10Instance/Vrm10Instance.cs
index 5b4d46531..e5af48483 100644
--- a/Packages/VRM10/Runtime/Components/Vrm10Instance/Vrm10Instance.cs
+++ b/Packages/VRM10/Runtime/Components/Vrm10Instance/Vrm10Instance.cs
@@ -231,6 +231,15 @@ namespace UniVRM10
             {
                 m_runtime.Dispose();
                 m_runtime = null;
+                m_springBoneRuntime = null;
+                return;
+            }
+
+            // m_runtime 代入前に Destroy された場合のフォールバック
+            if (m_springBoneRuntime != null)
+            {
+                m_springBoneRuntime.Dispose();
+                m_springBoneRuntime = null;
             }
         }