diff --git a/code/modules/atmospherics/environmental/LINDA_system.dm b/code/modules/atmospherics/environmental/LINDA_system.dm
index e2c6354275..8d063825f1 100644
--- a/code/modules/atmospherics/environmental/LINDA_system.dm
+++ b/code/modules/atmospherics/environmental/LINDA_system.dm
@@ -47,6 +47,8 @@
 	var/canvpass = CANVERTICALATMOSPASS(src, src)
 	for(var/direction in GLOB.cardinals_multiz)
 		var/turf/T = get_step_multiz(src, direction)
+		if(!istype(T))
+			continue
 		var/opp_dir = REVERSE_DIR(direction)
 		if(isopenturf(T) && !(blocks_air || T.blocks_air) && ((direction & (UP|DOWN))? (canvpass && CANVERTICALATMOSPASS(T, src)) : (canpass && CANATMOSPASS(T, src))) )
 			LAZYINITLIST(atmos_adjacent_turfs)