diff --git a/src/ai/api/ai_vehicle.hpp b/src/ai/api/ai_vehicle.hpp
--- a/src/ai/api/ai_vehicle.hpp
+++ b/src/ai/api/ai_vehicle.hpp
@@ -28,13 +28,13 @@ public:
 		ERR_VEHICLE_TOO_MANY,                   // [STR_ERROR_TOO_MANY_VEHICLES_IN_GAME]
 
 		/** Vehicle is not available */
-		ERR_VEHICLE_NOT_AVAILABLE,              // [STR_AIRCRAFT_NOT_AVAILABLE, STR_ROAD_VEHICLE_NOT_AVAILABLE, STR_SHIP_NOT_AVAILABLE, STR_RAIL_VEHICLE_NOT_AVAILABLE]
+		ERR_VEHICLE_NOT_AVAILABLE,              // [STR_ERROR_AIRCRAFT_NOT_AVAILABLE, STR_ERROR_ROAD_VEHICLE_NOT_AVAILABLE, STR_ERROR_SHIP_NOT_AVAILABLE, STR_ERROR_RAIL_VEHICLE_NOT_AVAILABLE]
 
 		/** Vehicle can't be build due to game settigns */
 		ERR_VEHICLE_BUILD_DISABLED,             // [STR_ERROR_CAN_T_BUILD_TRAIN, STR_ERROR_CAN_T_BUILD_ROAD_VEHICLE, STR_ERROR_CAN_T_BUILD_SHIP, STR_ERROR_CAN_T_BUILD_AIRCRAFT]
 
 		/** Vehicle can't be build in the selected depot */
-		ERR_VEHICLE_WRONG_DEPOT,                // [STR_DEPOT_WRONG_DEPOT_TYPE]
+		ERR_VEHICLE_WRONG_DEPOT,                // [STR_ERROR_DEPOT_WRONG_DEPOT_TYPE]
 
 		/** Vehicle can't return to the depot */
 		ERR_VEHICLE_CANNOT_SEND_TO_DEPOT,       // [STR_ERROR_CAN_T_SEND_TRAIN_TO_DEPOT, STR_ERROR_CAN_T_SEND_ROAD_VEHICLE_TO_DEPOT, STR_ERROR_CAN_T_SEND_SHIP_TO_DEPOT, STR_ERROR_CAN_T_SEND_AIRCRAFT_TO_HANGAR]
@@ -49,7 +49,7 @@ public:
 		ERR_VEHICLE_CANNOT_REFIT,               // [STR_ERROR_CAN_T_REFIT_TRAIN, STR_ERROR_CAN_T_REFIT_ROAD_VEHICLE, STR_ERROR_CAN_T_REFIT_SHIP, STR_ERROR_CAN_T_REFIT_AIRCRAFT]
 
 		/** Vehicle is destroyed */
-		ERR_VEHICLE_IS_DESTROYED,               // [STR_CAN_T_REFIT_DESTROYED_VEHICLE, STR_CAN_T_SELL_DESTROYED_VEHICLE]
+		ERR_VEHICLE_IS_DESTROYED,               // [STR_ERROR_CAN_T_REFIT_DESTROYED_VEHICLE, STR_ERROR_CAN_T_SELL_DESTROYED_VEHICLE]
 
 		/** Vehicle is not in a depot */
 		ERR_VEHICLE_NOT_IN_DEPOT,               // [STR_ERROR_AIRCRAFT_MUST_BE_STOPPED, STR_ERROR_ROAD_VEHICLE_MUST_BE_STOPPED_INSIDE_DEPOT, STR_TRAIN_MUST_BE_STOPPED, STR_ERROR_SHIP_MUST_BE_STOPPED_IN_DEPOT]
@@ -58,7 +58,7 @@ public:
 		ERR_VEHICLE_IN_FLIGHT,                  // [STR_ERROR_AIRCRAFT_IS_IN_FLIGHT]
 
 		/** Vehicle is without power */
-		ERR_VEHICLE_NO_POWER,                   // [STR_TRAIN_START_NO_CATENARY]
+		ERR_VEHICLE_NO_POWER,                   // [STR_ERROR_TRAIN_START_NO_CATENARY]
 
 	};