diff --git a/roadveh_cmd.c b/roadveh_cmd.c
index 4f8da89b1e..7bae695247 100644
--- a/roadveh_cmd.c
+++ b/roadveh_cmd.c
@@ -1564,6 +1564,7 @@ static void CheckIfRoadVehNeedsService(Vehicle *v)
 	// If we already got a slot at a stop, use that FIRST, and go to a depot later
 	if (v->u.road.slot != NULL) return;
 
+	// XXX If we already have a depot order, WHY do we search over and over?
 	depot = FindClosestRoadDepot(v);
 
 	if (depot == NULL || DistanceManhattan(v->tile, depot->xy) > 12) {