--- a/src/ai/api/ai_airport.cpp	Mon May 26 11:36:42 2008 +0000
+++ b/src/ai/api/ai_airport.cpp	Mon May 26 13:52:59 2008 +0000
@@ -46,7 +46,7 @@
 /* static */ int32 AIAirport::GetAirportCoverageRadius(AirportType type)
 {
 	if (type > AT_HELISTATION) return -1;
-	return _patches.modified_catchment ? ::GetAirport(type)->catchment : (uint)CA_UNMODIFIED;
+	return _settings.station.modified_catchment ? ::GetAirport(type)->catchment : (uint)CA_UNMODIFIED;
 }
 
 /* static */ bool AIAirport::BuildAirport(TileIndex tile, AirportType type)