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-rw-r--r--src/engine.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/engine.cpp b/src/engine.cpp
index ecc175e4a..198434a88 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -614,7 +614,7 @@ static void AcceptEnginePreview(EngineID eid, CompanyID company)
SetBit(e->company_avail, company);
if (e->type == VEH_TRAIN) {
assert(e->u.rail.railtype < RAILTYPE_END);
- SetBit(c->avail_railtypes, e->u.rail.railtype);
+ c->avail_railtypes |= GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes;
} else if (e->type == VEH_ROAD) {
SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
}
@@ -760,7 +760,7 @@ static void NewVehicleAvailable(Engine *e)
/* maybe make another rail type available */
RailType railtype = e->u.rail.railtype;
assert(railtype < RAILTYPE_END);
- FOR_ALL_COMPANIES(c) SetBit(c->avail_railtypes, railtype);
+ FOR_ALL_COMPANIES(c) c->avail_railtypes |= GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes;
} else if (e->type == VEH_ROAD) {
/* maybe make another road type available */
FOR_ALL_COMPANIES(c) SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);