diff --git a/benches/future_children.rs b/benches/future_children.rs
index aa07a76..5f6ef5c 100644
--- a/benches/future_children.rs
+++ b/benches/future_children.rs
@@ -4,16 +4,16 @@ use othello::{
     repr::{Board, Piece},
 };
 
-fn extend_layers_no_pruning(depth: usize, arena_size: usize) -> usize {
+fn extend_layers_no_pruning(depth: usize) -> usize {
     let config = FutureMoveConfig {
         max_depth: depth,
         min_arena_depth: 0,
         top_k_children: 5,
         up_to_minus: 4,
-        max_arena_size: arena_size,
+        max_arena_size: usize::MAX,
         do_prune: false,
         print: false,
-        children_eval_method: ChildrenEvalMethod::Max,
+        children_eval_method: ChildrenEvalMethod::Average,
     };
     let mut fut = FutureMoves::new(Piece::Black, config);
     fut.update_from_board(&Board::new().starting_pos());
@@ -23,14 +23,11 @@ fn extend_layers_no_pruning(depth: usize, arena_size: usize) -> usize {
 
 fn criterion_benchmark(c: &mut Criterion) {
     let mut group = c.benchmark_group("extend_layer (no pruning)");
-    const ARENA_SIZE: usize = 10_000_000;
 
     for depth in 6..8 {
-        group.throughput(Throughput::Elements(
-            extend_layers_no_pruning(depth, ARENA_SIZE) as u64,
-        ));
+        group.throughput(Throughput::Elements(extend_layers_no_pruning(depth) as u64));
         group.bench_with_input(BenchmarkId::from_parameter(depth), &depth, |b, depth| {
-            b.iter(|| extend_layers_no_pruning(*depth, ARENA_SIZE));
+            b.iter(|| extend_layers_no_pruning(*depth));
         });
     }
     group.finish();