diff --git a/engine-proto/gram-test/tetrahedron-radius-ratio.jl b/engine-proto/gram-test/tetrahedron-radius-ratio.jl
index 6172aa3..bb89268 100644
--- a/engine-proto/gram-test/tetrahedron-radius-ratio.jl
+++ b/engine-proto/gram-test/tetrahedron-radius-ratio.jl
@@ -63,9 +63,9 @@ guess = hcat(
     1  1  1  1 -0.5
   ] + 0.2*Engine.rand_on_shell(fill(BigFloat(-1), 5)),
   Engine.point([-1, -1, -1]),
-  Engine.point([ 1, -1, -1]),
-  Engine.point([-1,  1, -1]),
+  Engine.point([-1,  1,  1]),
   Engine.point([ 1, -1,  1]),
+  Engine.point([ 1,  1, -1]),
   BigFloat[0, 0, 0, 0, 1]
 )
 frozen = vcat(