diff --git a/apps/paper_trader/engine.py b/apps/paper_trader/engine.py
index 2fae32a..d16d9e4 100644
--- a/apps/paper_trader/engine.py
+++ b/apps/paper_trader/engine.py
@@ -1345,7 +1345,7 @@ class PaperTradingEngine:
 
         # Low-vol overlay: upgrade base symbol (e.g. QQQM → TQQQ) when market is calm
         overlay_sym = (risk.cash_parking_low_vol_overlay_symbol or "").upper()
-        if overlay_sym and overlay_sym != sym and self._parking_brake_cooldown_remaining <= 0:
+        if overlay_sym and overlay_sym != actual_sym.upper() and self._parking_brake_cooldown_remaining <= 0:
 
             def _compute_hurst(lb: int) -> float | None:
                 if n < lb + 1: