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-rw-r--r--src/group_cmd.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/group_cmd.cpp b/src/group_cmd.cpp
index b44e92fbe..72032e0c7 100644
--- a/src/group_cmd.cpp
+++ b/src/group_cmd.cpp
@@ -181,7 +181,7 @@ int32 CmdAddVehicleGroup(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
GroupID new_g = p1;
- if (!IsValidVehicleID(p2) || !IsValidGroupID(new_g)) return CMD_ERROR;
+ if (!IsValidVehicleID(p2) || (!IsValidGroupID(new_g) && !IsDefaultGroupID(new_g))) return CMD_ERROR;
Vehicle *v = GetVehicle(p2);
if (v->owner != _current_player || (v->type == VEH_TRAIN && !IsFrontEngine(v))) return CMD_ERROR;