diff --git a/maps/sierra/z1-z5_sierra.dmm b/maps/sierra/z1-z5_sierra.dmm
index 37ef6ad3dd00a..60e855ce766eb 100644
--- a/maps/sierra/z1-z5_sierra.dmm
+++ b/maps/sierra/z1-z5_sierra.dmm
@@ -4568,6 +4568,9 @@
 	},
 /turf/simulated/floor/wood/walnut,
 /area/security/sierra/prison)
+"aGt" = (
+/turf/simulated/floor/reinforced,
+/area/rnd/toxins)
 "aGH" = (
 /obj/structure/table/woodentable/walnut,
 /obj/machinery/light/small{
@@ -10478,9 +10481,7 @@
 	c_tag = "Research - Toxins Chamber Control";
 	dir = 8
 	},
-/turf/simulated/floor/reinforced{
-	map_airless = 1
-	},
+/turf/simulated/floor/reinforced,
 /area/rnd/toxins)
 "bBa" = (
 /obj/floor_decal/borderfloorblack{
@@ -109016,9 +109017,7 @@
 	pixel_x = -32;
 	pixel_y = 6
 	},
-/turf/simulated/floor/reinforced{
-	map_airless = 1
-	},
+/turf/simulated/floor/reinforced,
 /area/rnd/toxins)
 "qaC" = (
 /obj/machinery/door/firedoor,
@@ -265040,7 +265039,7 @@ kHe
 dOS
 nCE
 bbO
-xMA
+aGt
 nKz
 dkl
 xMA