diff --git a/README.md b/README.md
index 746a0cc..2d76c5b 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,9 @@ TechPack is a collection of following Mods:
 
 **A TechPack Tutorial is available as ![Wiki](https://github.com/joe7575/techpack/wiki)**
 
+**Machine data is stored in memory and not in the nodes itself. Therefore, never move or copy machines or tubes by means of Worldedit.**
+**The moved/copied nodes will not have valid node numbers, which could lead to a server crash.**
+
 TechPack provides:
 - lumber tubes to connect 2 nodes
 - a Pusher node to pull/push items through tubes
diff --git a/releasenotes.md b/releasenotes.md
index b866294..b096094 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -1,6 +1,19 @@
 # Release Notes for ModPack TechPack [techpack]
 
 
+## V2.02.05 (2019-03-14)
+
+### Additions
+
+### Removals
+
+### Changes
+
+### Fixes
+- Blackhole tube side backfix
+
+
+
 ## V2.02.04 (2019-03-02)
 
 ### Additions
diff --git a/tubelib/command.lua b/tubelib/command.lua
index 66bfbea..53ca7bb 100644
--- a/tubelib/command.lua
+++ b/tubelib/command.lua
@@ -139,8 +139,8 @@ local function get_dest_node(pos, side)
 	local dir = side_to_dir(side, node.param2)
 	local spos, sdir = Tube:get_connected_node_pos(pos, dir)
 	_,node = Tube:get_node(spos)
-	local in_side = dir_to_side(sdir, node.param2)
-	return spos, in_side, Name2Name[node.name] or node.name 
+	local out_side = dir_to_side(tubelib2.Turn180Deg[sdir], node.param2)
+	return spos, out_side, Name2Name[node.name] or node.name 
 end
 	
 local function item_handling_node(name)