diff --git a/code/game/turfs/closed.dm b/code/game/turfs/closed.dm
index 2165dbd8db2..7aeab558fdb 100644
--- a/code/game/turfs/closed.dm
+++ b/code/game/turfs/closed.dm
@@ -2,7 +2,7 @@
 	layer = CLOSED_TURF_LAYER
 	opacity = 1
 	density = TRUE
-	blocks_air = 1
+	blocks_air = TRUE
 	rad_flags = RAD_PROTECT_CONTENTS | RAD_NO_CONTAMINATE
 	rad_insulation = RAD_MEDIUM_INSULATION
 
diff --git a/code/game/turfs/open.dm b/code/game/turfs/open.dm
index 5308b0b04ed..be75bd85d0c 100644
--- a/code/game/turfs/open.dm
+++ b/code/game/turfs/open.dm
@@ -130,7 +130,7 @@
 
 /turf/open/indestructible/airblock
 	icon_state = "bluespace"
-	CanAtmosPass = ATMOS_PASS_NO
+	blocks_air = TRUE
 	baseturfs = /turf/open/indestructible/airblock
 
 /turf/open/indestructible/clock_spawn_room
diff --git a/code/game/turfs/simulated/minerals.dm b/code/game/turfs/simulated/minerals.dm
index e4bd38b46f7..23bdd2cbd4b 100644
--- a/code/game/turfs/simulated/minerals.dm
+++ b/code/game/turfs/simulated/minerals.dm
@@ -11,7 +11,6 @@
 	initial_gas_mix = AIRLESS_ATMOS
 	opacity = 1
 	density = TRUE
-	blocks_air = 1
 	layer = EDGED_TURF_LAYER
 	temperature = TCMB
 	var/environment_type = "asteroid"