diff --git a/src/settings.cpp b/src/settings.cpp
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -843,7 +843,7 @@ static bool RoadVehAccelerationModelChan
 	if (_settings_game.vehicle.roadveh_acceleration_model != AM_ORIGINAL) {
 		RoadVehicle *rv;
 		FOR_ALL_ROADVEHICLES(rv) {
-			if (rv->IsRoadVehFront()) {
+			if (rv->IsFrontEngine()) {
 				rv->CargoChanged();
 			}
 		}
@@ -866,7 +866,7 @@ static bool RoadVehSlopeSteepnessChanged
 {
 	RoadVehicle *rv;
 	FOR_ALL_ROADVEHICLES(rv) {
-		if (rv->IsRoadVehFront()) rv->CargoChanged();
+		if (rv->IsFrontEngine()) rv->CargoChanged();
 	}
 
 	return true;