diff --git a/src/timetable_cmd.cpp b/src/timetable_cmd.cpp
index f1861f412c..3b24604955 100644
--- a/src/timetable_cmd.cpp
+++ b/src/timetable_cmd.cpp
@@ -237,7 +237,7 @@ CommandCost CmdBulkChangeTimetable(DoCommandFlags flags, VehicleID veh, ModifyTi
 
 	if (v->GetNumOrders() == 0) return CMD_ERROR;
 
-        bool mtf_compare = (mtf == MTF_TRAVEL_TIME) ? MTF_WAIT_TIME : MTF_TRAVEL_TIME, data);
+        ModifyTimetableFlags mtf_compare = (mtf == MTF_TRAVEL_TIME) ? MTF_WAIT_TIME : MTF_TRAVEL_TIME, data);
 	if (flags.Test(DoCommandFlag::Execute)) {
 		for (VehicleOrderID order_number = 0; order_number < v->GetNumOrders(); order_number++) {
 			Order *order = v->GetOrder(order_number);