diff --git a/domain/magicplan/mapper.py b/domain/magicplan/mapper.py
index 6d7d5f422..2befadd3a 100644
--- a/domain/magicplan/mapper.py
+++ b/domain/magicplan/mapper.py
@@ -104,6 +104,7 @@ def _map_window_ventilation(
                 v
                 for label in [
                     "Total Trickle Vent Effective Area (mm2) (No Code Then Width x Height)",
+                    "Individual Trickle Vent Effective Area (mm2) (No Code Then Width x Height)",
                     "Trickle Vent Effective Area (mm2) (No Code Then Width x Height)",
                 ]
                 if (v := _try_get_int_value(label)) is not None