diff --git a/bench/CMakeLists.txt b/bench/CMakeLists.txt
index 13a6638..6ce2c0e 100644
--- a/bench/CMakeLists.txt
+++ b/bench/CMakeLists.txt
@@ -71,6 +71,6 @@ add_custom_target(vde_benchmarks
 enable_testing()
 add_test(NAME bench_bvh      COMMAND vde_bench_bvh      --benchmark_min_time=0.01s)
 add_test(NAME bench_delaunay COMMAND vde_bench_delaunay --benchmark_min_time=0.01s)
-# add_test(NAME bench_boolean  COMMAND vde_bench_boolean  --benchmark_min_time=0.01s)
+add_test(NAME bench_boolean  COMMAND vde_bench_boolean  --benchmark_min_time=0.01s)
 add_test(NAME bench_curves   COMMAND vde_bench_curves   --benchmark_min_time=0.01s)
 add_test(NAME bench_spatial  COMMAND vde_bench_spatial  --benchmark_min_time=0.01s)
diff --git a/bench/bench_boolean.cpp b/bench/bench_boolean.cpp
index c1e2dd4..631d3cc 100644
--- a/bench/bench_boolean.cpp
+++ b/bench/bench_boolean.cpp
@@ -28,12 +28,14 @@ struct SpherePair {
 /// sphere_a at origin, sphere_b translated by +1.0 along X (overlap ~0.5)
 SpherePair make_sphere_pair(int face_count) {
     // make_sphere produces ~ 2 * seg_u * seg_v faces → solve for seg
-    int seg = std::max(static_cast<int>(std::ceil(std::sqrt(face_count / 2.0))), 4);
-    int seg_u = seg;
-    int seg_v = seg;
+    int seg = std::max(static_cast<int>(std::ceil(std::sqrt(face_count / 2.0))), 3);
+    // Use deflection to control tessellation density per face
+    // Each NURBS face tessellates res×res quads where res = max(4, 1/deflection)
+    // For benchmark we want coarse tessellation: deflection = 0.5 → res=4
+    double deflection = 0.5;
 
-    auto sphere_a = brep::make_sphere(1.0, seg_u, seg_v).to_mesh();
-    auto sphere_b = brep::make_sphere(1.0, seg_u, seg_v).to_mesh();
+    auto sphere_a = brep::make_sphere(1.0, seg, seg).to_mesh(deflection);
+    auto sphere_b = brep::make_sphere(1.0, seg, seg).to_mesh(deflection);
 
     // Translate sphere_b by +1.0 along X so they overlap by ~0.5
     // Rebuild from triangles with translated vertices