diff --git a/crates/ml-alpha/examples/alpha_train.rs b/crates/ml-alpha/examples/alpha_train.rs
index e0d183e94..71e8e6c78 100644
--- a/crates/ml-alpha/examples/alpha_train.rs
+++ b/crates/ml-alpha/examples/alpha_train.rs
@@ -261,6 +261,7 @@ fn main() -> Result<()> {
         seed: cli.seed,
         horizon_weights,
         n_batch: cli.batch_size,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &trainer_cfg).context("trainer init")?;
 
diff --git a/crates/ml-alpha/tests/perception_overfit.rs b/crates/ml-alpha/tests/perception_overfit.rs
index 188ba54fb..a79b98fcd 100644
--- a/crates/ml-alpha/tests/perception_overfit.rs
+++ b/crates/ml-alpha/tests/perception_overfit.rs
@@ -72,6 +72,7 @@ fn stacked_trainer_loss_shrinks_on_constant_signal() {
         seed: 0x4242,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
 
@@ -145,6 +146,7 @@ fn stacked_trainer_loss_shrinks_with_stride_4() {
         seed: 0xC4C4,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
 
@@ -198,6 +200,7 @@ fn stacked_trainer_loss_shrinks_at_batch_32() {
         seed: 0xB32B,
         horizon_weights: [1.0; 5],
         n_batch: 32,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
 
@@ -295,6 +298,7 @@ fn evaluate_alone_succeeds() {
         seed: 0x6262,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
     let ts = 1_000_000u64;
@@ -322,6 +326,7 @@ fn evaluate_works_after_captured_training_step() {
         seed: 0x5151,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
 
@@ -356,6 +361,7 @@ fn evaluate_works_after_capture_no_replay() {
         seed: 0x8181,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
     let ts = 1_000_000u64;
@@ -385,6 +391,7 @@ fn horizon_ema_and_lambda_track_after_training() {
         seed: 0x9292,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
 
@@ -440,6 +447,7 @@ fn evaluate_works_after_warmup_only() {
         seed: 0x7171,
         horizon_weights: [1.0; 5],
         n_batch: 1,
+        smoothness_base_lambda: 0.0,
     };
     let mut trainer = PerceptionTrainer::new(&dev, &cfg).expect("init");
     let ts = 1_000_000u64;