diff --git a/src/roadveh_cmd.cpp b/src/roadveh_cmd.cpp
--- a/src/roadveh_cmd.cpp
+++ b/src/roadveh_cmd.cpp
@@ -185,6 +185,8 @@ void RoadVehUpdateCache(RoadVehicle *v)
  * @param flags operation to perform
  * @param p1 bus/truck type being built (engine)
  * @param p2 unused
+ * @param text unused
+ * @return the cost of this operation or an error
  */
 CommandCost CmdBuildRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {
@@ -340,6 +342,8 @@ bool RoadVehicle::IsStoppedInDepot() con
  * @param flags operation to perform
  * @param p1 vehicle ID to be sold
  * @param p2 unused
+ * @param text unused
+ * @return the cost of this operation or an error
  */
 CommandCost CmdSellRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {
@@ -448,6 +452,8 @@ bool RoadVehicle::FindClosestDepot(TileI
  * @param p2 various bitmasked elements
  * - p2 bit 0-3 - DEPOT_ flags (see vehicle.h)
  * - p2 bit 8-10 - VLW flag (for mass goto depot)
+ * @param text unused
+ * @return the cost of this operation or an error
  */
 CommandCost CmdSendRoadVehToDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {
@@ -468,6 +474,8 @@ CommandCost CmdSendRoadVehToDepot(TileIn
  * @param flags operation to perform
  * @param p1 vehicle ID to turn
  * @param p2 unused
+ * @param text unused
+ * @return the cost of this operation or an error
  */
 CommandCost CmdTurnRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {
@@ -1992,7 +2000,8 @@ Trackdir RoadVehicle::GetVehicleTrackdir
  * - p2 = (bit 0-7) - the new cargo type to refit to
  * - p2 = (bit 8-15) - the new cargo subtype to refit to
  * - p2 = (bit 16) - refit only this vehicle
- * @return cost of refit or error
+ * @param text unused
+ * @return the cost of this operation or an error
  */
 CommandCost CmdRefitRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {