diff --git a/init.lua b/init.lua
index 06c076b..09adef6 100644
--- a/init.lua
+++ b/init.lua
@@ -359,11 +359,17 @@ function fire.drop_items(pos, invstring)
 
 end
 
+local groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 3}
+
+if minetest.get_modpath("pipeworks") then
+	groups.tubedevice = 1
+	groups.tubedevice_receiver = 1
+end
 
 -- override chest node so that it's flammable
 minetest.override_item("default:chest", {
 
-	groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 3},
+	groups = groups,
 
 	on_burn = function(p)
 		fire.drop_items(p, "main")