diff --git a/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs b/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
index 158cf10dc4..717f134a3e 100644
--- a/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
+++ b/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
@@ -267,7 +267,7 @@ public SphereCollider(Transform transform, VRMSpringBoneColliderGroup.SphereColl
             {
                 Position = transform.TransformPoint(collider.Offset);
                 var ls = transform.lossyScale;
-                var scale = Mathf.Max(ls.x, ls.y, ls.z);
+                var scale = Mathf.Max(Mathf.Max(ls.x, ls.y), ls.z);
                 Radius = scale * collider.Radius;
             }
         }
diff --git a/Assets/VRM/Runtime/SpringBone/VRMSpringBoneColliderGroup.cs b/Assets/VRM/Runtime/SpringBone/VRMSpringBoneColliderGroup.cs
index 9ad63c3aee..bc4fb63ec4 100644
--- a/Assets/VRM/Runtime/SpringBone/VRMSpringBoneColliderGroup.cs
+++ b/Assets/VRM/Runtime/SpringBone/VRMSpringBoneColliderGroup.cs
@@ -36,8 +36,8 @@ public float UniformedLossyScale
             get
             {
                 return Mathf.Max(
-                    transform.lossyScale.x,
-                    transform.lossyScale.y,
+                    Mathf.Max(transform.lossyScale.x,
+                    transform.lossyScale.y),
                     transform.lossyScale.z
                 );
             }