diff --git a/src/economy_type.h b/src/economy_type.h
--- a/src/economy_type.h
+++ b/src/economy_type.h
@@ -155,7 +155,7 @@ typedef int8 PriceMultipliers[PR_END];
 
 /** Types of expenses. */
 enum ExpensesType : byte {
-	EXPENSES_CONSTRUCTION =  0,   ///< Construction costs.
+	EXPENSES_CONSTRUCTION =  0,   ///< Construction costs. [miscellaneous/unsorted]
 	EXPENSES_NEW_VEHICLES,        ///< New vehicles.
 	EXPENSES_TRAIN_RUN,           ///< Running costs trains.
 	EXPENSES_ROADVEH_RUN,         ///< Running costs road vehicles.
@@ -168,6 +168,16 @@ enum ExpensesType : byte {
 	EXPENSES_SHIP_INC,            ///< Income from ships.
 	EXPENSES_LOAN_INT,            ///< Interest payments over the loan.
 	EXPENSES_OTHER,               ///< Other expenses.
+	EXPENSES_T_TRAIN_CON,
+	EXPENSES_T_ROAD_CON,
+	EXPENSES_T_AIRCRAFT_CON,
+	EXPENSES_T_SHIP_CON,
+	EXPENSES_T_TREES_CON,
+	EXPENSES_T_SCENERY_CON,
+	EXPENSES_T_LANDSCAPING,
+	EXPENSES_T_DEMOLITION,
+	EXPENSES_T_REWARD_INC,
+	EXPENSES_T_DILAPIDATION,
 	EXPENSES_END,                 ///< Number of expense types.
 	INVALID_EXPENSES      = 0xFF, ///< Invalid expense type.
 };