diff --git a/fire.lua b/fire.lua
index 786c67b..635d9e1 100644
--- a/fire.lua
+++ b/fire.lua
@@ -1,20 +1,16 @@
-if minetest.get_modpath("fire") and rawget(_G, "fire") then
+if minetest.get_modpath("fire") then
 	landrush.default_flame_should_extinguish = fire.flame_should_extinguish
 
 	function fire.flame_should_extinguish(pos)
-		corner0 = landrush.can_interact({x=pos.x-1,y=pos.y-1,z=pos.z-1},"-!-")
-		corner1 = landrush.can_interact({x=pos.x-1,y=pos.y-1,z=pos.z+1},"-!-")
-		corner2 = landrush.can_interact({x=pos.x-1,y=pos.y+1,z=pos.z-1},"-!-")
-		corner3 = landrush.can_interact({x=pos.x-1,y=pos.y+1,z=pos.z+1},"-!-")
-		corner4 = landrush.can_interact({x=pos.x+1,y=pos.y-1,z=pos.z-1},"-!-")
-		corner5 = landrush.can_interact({x=pos.x+1,y=pos.y-1,z=pos.z+1},"-!-")
-		corner6 = landrush.can_interact({x=pos.x+1,y=pos.y+1,z=pos.z-1},"-!-")
-		corner7 = landrush.can_interact({x=pos.x+1,y=pos.y+1,z=pos.z+1},"-!-")
-		if corner0 and corner1 then
-			return landrush.default_flame_should_extinguish(pos)
-		else
-			return true
+		for x = -1, 1 do
+			for y = -1, 1 do
+				for z = -1, 1 do
+					if not landrush.can_interact({x=pos.x+x,y=pos.y+y,z=pos.z+z},"-!-") then
+						return true
+					end
+				end
+			end
 		end
+		return landrush.default_flame_should_extinguish(pos)
 	end
 end
-