diff --git a/tubes.lua b/tubes.lua
index c871aeb..a5e6145 100644
--- a/tubes.lua
+++ b/tubes.lua
@@ -177,7 +177,8 @@ pipeworks.register_tube = function(name, desc, plain, noctrs, ends, short, inv,
 						       drawtype = "airlike",
 						       style = "6d",
 						       basename = name,
-						       groups = {not_in_creative_inventory = 1, tube_to_update = 1}
+						       groups = {not_in_creative_inventory = 1, tube_to_update = 1},
+						       tube = {connect_sides = {front = 1, back = 1, left = 1, right = 1, top = 1, bottom = 1}},
 			})
 			table.insert(pipeworks.tubenodes,cname)
 			for xm = 0, 1 do