diff --git a/technic/machines/register/cables.lua b/technic/machines/register/cables.lua
index 95dcaea..70da6d6 100644
--- a/technic/machines/register/cables.lua
+++ b/technic/machines/register/cables.lua
@@ -67,7 +67,7 @@ local function clear_networks(pos)
 				local tier = network.tier
 
 				-- Actually add it to the (cached) network
-				-- This is similar to check_node_subp
+				-- !! IMPORTANT: ../switching_station.lua -> check_node_subp() must be kept in sync
 				technic.cables[minetest.hash_node_position(pos)] = network_id
 				pos.visited = 1
 				if technic.is_tier_cable(node.name, tier) then
@@ -76,7 +76,7 @@ local function clear_networks(pos)
 				elseif technic.machines[tier][node.name] then
 					-- Found a machine
 					local eu_type = technic.machines[tier][node.name]
-					meta:set_string(tier.."_network", string.format("%X", network_id))
+					meta:set_string(tier.."_network", string.format("%.20g", network_id))
 					if     eu_type == technic.producer then
 						table.insert(network.PR_nodes, pos)
 					elseif eu_type == technic.receiver then
diff --git a/technic/machines/switching_station.lua b/technic/machines/switching_station.lua
index e97e761..521e2f8 100644
--- a/technic/machines/switching_station.lua
+++ b/technic/machines/switching_station.lua
@@ -117,6 +117,7 @@ local function add_cable_node(nodes, pos, network_id, queue)
 end
 
 -- Generic function to add found connected nodes to the right classification array
+-- !! IMPORTANT: register/cables.lua -> clear_networks() must be kept in sync
 local check_node_subp = function(network, pos, machines, sw_pos, from_below, network_id, queue)
 	technic.get_or_load_node(pos)
 	local name = minetest.get_node(pos).name
@@ -134,7 +135,7 @@ local check_node_subp = function(network, pos, machines, sw_pos, from_below, net
 	--dprint(name.." is a "..machines[name])
 	local meta = minetest.get_meta(pos)
 	-- Normal tostring() does not have enough precision, neither does meta:set_int()
-	-- Bug: Cannot use hexadecimal notation for compression (LuaJIT Windows bug, #911)
+	-- Lua 5.1 bug: Cannot use hexadecimal notation for compression (see LuaJIT #911)
 	meta:set_string(network.tier.."_network", string.format("%.20g", network_id))
 
 	if     eu_type == technic.producer then