--- a/data/json/furniture_and_terrain/terrain-doors.json
+++ b/data/json/furniture_and_terrain/terrain-doors.json
@@ -2152,7 +2152,7 @@
     "symbol": "+",
     "looks_like": "t_door_metal_lab_o",
     "color": "cyan",
-    "move_cost": 1,
+    "move_cost": 2,
     "roof": "t_flat_roof",
     "flags": [ "TRANSPARENT", "FLAT", "CONNECT_TO_WALL", "BURROWABLE" ],
     "bash": {