diff --git a/code/game/machinery/alarm.dm b/code/game/machinery/alarm.dm
index 745cd440f41..97b3dda10d7 100644
--- a/code/game/machinery/alarm.dm
+++ b/code/game/machinery/alarm.dm
@@ -433,9 +433,9 @@
 			for(var/device_id in alarm_area.air_scrub_names)
 				send_signal(device_id, list(
 					"power"= 1,
+					"o2_scrub" = (preset==AALARM_PRESET_VOX),
+					"n2_scrub" = 0
 					"co2_scrub"= 1,
-					"tox_scrub"= 0,
-					"n2o_scrub"= 0,
 					"scrubbing"= 1,
 					"widenet"= 0,
 				))