From 472ed97b8cb8abe8ba04177641bc6138186f3cd5 Mon Sep 17 00:00:00 2001
From: Detective Google <48196179+Detective-Google@users.noreply.github.com>
Date: Mon, 22 Jun 2020 15:32:23 -0500
Subject: [PATCH] port tg#51713

---
 code/game/turfs/simulated/floor.dm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/game/turfs/simulated/floor.dm b/code/game/turfs/simulated/floor.dm
index 9f5ce679f9..75603a1116 100644
--- a/code/game/turfs/simulated/floor.dm
+++ b/code/game/turfs/simulated/floor.dm
@@ -205,7 +205,7 @@
 			if(floor_tile)
 				if(prob(70))
 					remove_tile()
-			else if(prob(50))
+			else if(prob(50) && (/turf/open/space in baseturfs))
 				ReplaceWithLattice()
 
 /turf/open/floor/narsie_act(force, ignore_mobs, probability = 20)