1 files changed, 1 insertions, 0 deletions
diff --git a/openttd.h b/openttd.h
index 29d9d0c9d..0e1baf020 100644
--- a/openttd.h
+++ b/openttd.h
@@ -41,6 +41,7 @@ typedef uint16 TownID;
 typedef uint16 IndustryID;
 typedef uint16 DepotID;
 typedef uint16 WaypointID;
+typedef uint16 OrderID;
 typedef byte PlayerID;
 typedef byte VehicleOrderID;  ///< The index of an order within its current vehicle (not pool related)
 typedef byte CargoID;