diff --git a/crates/ml-alpha/examples/phase1d_long_horizon.rs b/crates/ml-alpha/examples/phase1d_long_horizon.rs
index f657086c2..4d5d19c32 100644
--- a/crates/ml-alpha/examples/phase1d_long_horizon.rs
+++ b/crates/ml-alpha/examples/phase1d_long_horizon.rs
@@ -65,8 +65,6 @@ struct Cli {
     /// Fraction of val to use as calibration set (rest is held-out test).
     /// 0 disables Platt/isotonic post-hoc calibration.
     #[arg(long, default_value_t = 0.5)] cal_frac: f32,
-    /// Train a stacked regime head on the cal half? `0` skips.
-    #[arg(long, default_value_t = true)] stacker: bool,
     /// Stacker hidden dim (small — input is 7-dim, plenty of capacity).
     #[arg(long, default_value_t = 32)] stacker_hidden: usize,
     /// Stacker training epochs.
@@ -321,7 +319,7 @@ fn main() -> Result<()> {
         // half, evaluates on the test half. The cal half is used for both
         // Platt and the stacker so all comparisons are on the same
         // held-out test bars.
-        if cli.stacker {
+        {
             const N_BLOCK_S: usize = 6;
             const STACKER_IN_DIM: usize = 1 + N_BLOCK_S; // mamba_logit + Block-S
             // Block-S column offsets within the snapshot row.