diff --git a/src/airport_movement.h b/src/airport_movement.h
--- a/src/airport_movement.h
+++ b/src/airport_movement.h
@@ -8,12 +8,12 @@
 
 // state machine input struct (from external file, etc.)
 // Finite sTate mAchine --> FTA
-typedef struct AirportFTAbuildup {
+struct AirportFTAbuildup {
 	byte position; // the position that an airplane is at
 	byte heading;  // the current orders (eg. TAKEOFF, HANGAR, ENDLANDING, etc.)
 	uint64 block;  // the block this position is on on the airport (st->airport_flags)
 	byte next;     // next position from this position
-} AirportFTAbuildup;
+};
 
 ///////////////////////////////////////////////////////////////////////
 /////*********Movement Positions on Airports********************///////