diff --git a/src/mnemosyne/gateway.py b/src/mnemosyne/gateway.py
index 1758fa5..047c1f7 100644
--- a/src/mnemosyne/gateway.py
+++ b/src/mnemosyne/gateway.py
@@ -1414,8 +1414,22 @@ def _apply_fidelity(payload: dict, session: "Session") -> None:
                 obj_id = fm.register_object(obj)
                 content_map[key] = obj_id
 
-    # Check pressure and log
-    pressure = fm.current_pressure()
+    # Check pressure and log.
+    # Scale window_size so FM's internal pressure matches real API pressure.
+    # (Same fix as _update_fidelity_pressure — FM's total_tokens() is only
+    # a fraction of the real context, so internal pressure is always NORMAL.)
+    obj_tokens = fm.total_tokens()
+    if obj_tokens > 0 and fm.window_size > 0:
+        real_pressure_ratio = session.token_state.get("last_effective", 0) / fm.window_size
+        if real_pressure_ratio > 0:
+            saved_ws = fm.window_size
+            fm.window_size = max(1, int(obj_tokens / real_pressure_ratio))
+            pressure = fm.current_pressure()
+            fm.window_size = saved_ws
+        else:
+            pressure = fm.current_pressure()
+    else:
+        pressure = fm.current_pressure()
     if pressure > PressureZone.NORMAL:
         transitions = fm.degrade(turn)
         for obj_id, old_level, new_level in transitions: