diff --git a/domain/magicplan/ventilation_audit.py b/domain/magicplan/ventilation_audit.py
index 74fc66e1f..9751d770d 100644
--- a/domain/magicplan/ventilation_audit.py
+++ b/domain/magicplan/ventilation_audit.py
@@ -11,7 +11,7 @@ from domain.magicplan.models import Door, Plan, Room, Window
 
 _DATA_START_ROW = 6
 _MAX_ROWS = 50
-_DOOR_AREA_COL = "U"
+_DOOR_AREA_COL = "T"
 _DOOR_AREA_CF_RANGE = f"{_DOOR_AREA_COL}{_DATA_START_ROW}:{_DOOR_AREA_COL}{_DATA_START_ROW + _MAX_ROWS - 1}"
 _Y_THRESHOLD = 7600
 _DOOR_AREA_HEADER = CellRichText(
@@ -94,9 +94,9 @@ def populate_sheet(sheet: Any, plan: Plan) -> None:
     for i, (room_name, door) in enumerate(doors):
         row = _DATA_START_ROW + i
         vent = door.ventilation
-        _write_cell(sheet, row, "R", room_name)
-        _write_cell(sheet, row, "S", door.width_mm)
-        _write_cell(sheet, row, "T", vent.undercut_mm if vent else 0)
-        # U = formula =S*T — do not write
+        _write_cell(sheet, row, "Q", room_name)
+        _write_cell(sheet, row, "R", door.width_mm)
+        _write_cell(sheet, row, "S", vent.undercut_mm if vent else 0)
+        # T = formula =R*S — do not write
 
     _apply_column_y_formatting(sheet)