diff --git a/.luacheck_tidy b/.luacheck_tidy
index 7812b4c..684bab3 100644
--- a/.luacheck_tidy
+++ b/.luacheck_tidy
@@ -4,7 +4,9 @@ read_globals = {
 	"minetest", "default",
 	"dump", "vector",
 	"VoxelManip", "VoxelArea",
-	"ItemStack", "PseudoRandom",
+	"ItemStack",
+	"pipeworks",
+	"PseudoRandom",
 	"stairsplus", "intllib",
 	"Settings",
 	math = { fields = {"sign"} }
diff --git a/.luacheckrc b/.luacheckrc
index de08e04..2ba39e4 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -4,6 +4,7 @@ read_globals = {
 	"default",
 	"dump",
 	"ItemStack",
+	"pipeworks",
 	"PseudoRandom",
 	"stairsplus",
 	"intllib",
diff --git a/modules/network/ctrl.lua b/modules/network/ctrl.lua
index 667b6f7..0e644e9 100644
--- a/modules/network/ctrl.lua
+++ b/modules/network/ctrl.lua
@@ -67,7 +67,6 @@ me.register_node("ctrl", {
 		meta:set_string("owner", name)
 	end,
 	on_destruct = function(pos)
-    local net = me.get_network(pos)
     local net,idx = me.get_network(pos)
     --disconnect all those who need the network
     me.send_event(pos,"disconnect",{net=net})