diff --git a/code/modules/events/gravity.dm b/code/modules/events/gravity.dm
index 0719c9bba1..f5fc8f0b5a 100644
--- a/code/modules/events/gravity.dm
+++ b/code/modules/events/gravity.dm
@@ -1,8 +1,14 @@
 /datum/event/gravity
 	announceWhen = 5
+	var/list/zLevels
 
 /datum/event/gravity/setup()
 	endWhen = rand(15, 60)
+	// Setup which levels we will disrupt gravit on.
+	zLevels = using_map.station_levels.Copy()
+	if (planet_controller)
+		for(var/datum/planet/P in planet_controller.planets)
+			zLevels -= P.expected_z_levels
 
 /datum/event/gravity/announce()
 	command_announcement.Announce("Feedback surge detected in mass-distributions systems. Artificial gravity has been disabled whilst the system \
@@ -11,7 +17,7 @@
 /datum/event/gravity/start()
 	gravity_is_on = 0
 	for(var/area/A in world)
-		if(A.z in using_map.station_levels)
+		if(A.z in zLevels)
 			A.gravitychange(gravity_is_on, A)
 
 /datum/event/gravity/end()
@@ -19,7 +25,7 @@
 		gravity_is_on = 1
 
 		for(var/area/A in world)
-			if(A.z in using_map.station_levels)
+			if(A.z in zLevels)
 				A.gravitychange(gravity_is_on, A)
 
 		command_announcement.Announce("Gravity generators are again functioning within normal parameters. Sorry for any inconvenience.", "Gravity Restored")