diff --git a/vacuum_gambit.p8 b/vacuum_gambit.p8
index 1e28a4e..0d1c62c 100644
--- a/vacuum_gambit.p8
+++ b/vacuum_gambit.p8
@@ -460,6 +460,7 @@ function ship_m:constrain(p, dp, pmin, pmax, want)
   -- brake point
   bp = p + bd + v1
  end
+ calc_targets()
  if bp < pmin then
   -- undershoot. max thrust,
   -- then treat as overshoot