diff --git a/engine-proto/gram-test/circles-in-triangle.jl b/engine-proto/gram-test/circles-in-triangle.jl
index ca49574..457ac0d 100644
--- a/engine-proto/gram-test/circles-in-triangle.jl
+++ b/engine-proto/gram-test/circles-in-triangle.jl
@@ -66,7 +66,7 @@ guess = hcat(
   Engine.sphere(BigFloat[cos(pi/3), sin(pi/3), 0], BigFloat(1//5)),
   BigFloat[0, 0, 0, 0, 1]
 )
-frozen = [CartesianIndex(j, 9) for j in 4:5]
+frozen = [CartesianIndex(j, 9) for j in 1:5]
 #=
 guess = hcat(
   Engine.plane(BigFloat[0, 0, 1], BigFloat(0)),