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-rw-r--r--main_gui.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/main_gui.c b/main_gui.c
index 50252f367..86fec3d1e 100644
--- a/main_gui.c
+++ b/main_gui.c
@@ -1219,7 +1219,7 @@ static void PlaceProc_LightHouse(TileIndex tile)
TileInfo ti;
FindLandscapeHeightByTile(&ti, tile);
- if (IsTileType(tile, MP_CLEAR) || IsSteepTileh(ti.tileh))
+ if (!IsTileType(tile, MP_CLEAR) || IsSteepTileh(ti.tileh))
return;
ModifyTile(tile, MP_SETTYPE(MP_UNMOVABLE) | MP_MAP5, 1);
@@ -1231,7 +1231,7 @@ static void PlaceProc_Transmitter(TileIndex tile)
TileInfo ti;
FindLandscapeHeightByTile(&ti, tile);
- if (IsTileType(tile, MP_CLEAR) || IsSteepTileh(ti.tileh))
+ if (!IsTileType(tile, MP_CLEAR) || IsSteepTileh(ti.tileh))
return;
ModifyTile(tile, MP_SETTYPE(MP_UNMOVABLE) | MP_MAP5, 0);