diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp
--- a/src/aircraft_cmd.cpp
+++ b/src/aircraft_cmd.cpp
@@ -309,7 +309,7 @@ CommandCost CmdBuildAircraft(TileIndex t
 		v->cargo_type = e->GetDefaultCargoType();
 		u->cargo_type = CT_MAIL;
 
-		v->name = nullptr;
+		v->name.clear();
 		v->last_station_visited = INVALID_STATION;
 		v->last_loading_station = INVALID_STATION;