diff --git a/mods/HELP/doc/doc_items/API.md b/mods/HELP/doc/doc_items/API.md
index 26cb11861..f8d3b87ce 100644
--- a/mods/HELP/doc/doc_items/API.md
+++ b/mods/HELP/doc/doc_items/API.md
@@ -351,6 +351,13 @@ definitions are already automatically added to this factoid.
 * `dig_immediate`: This group is already covered by the default factoids of this
   mod
 
+
+## Groups interpretations
+Nodes which are technically a liquid will not be considered liquids by this mod
+if the group `fake_liquid=1` is used. Useful for stuff like cobwebs.
+
+
+
 ## Dependencies
 If you only add the custom fields to your items, you do *not* need to depend
 on this mod. If you use anything else from this mod (e.g. a function), you
diff --git a/mods/HELP/doc/doc_items/init.lua b/mods/HELP/doc/doc_items/init.lua
index ec1bbf9f8..bdbba21a4 100644
--- a/mods/HELP/doc/doc_items/init.lua
+++ b/mods/HELP/doc/doc_items/init.lua
@@ -592,7 +592,7 @@ doc.add_category("nodes", {
 			formstring = entry_image(data)
 			datastring = factoids_header(data, "nodes")
 
-			local liquid = data.def.liquidtype ~= "none"
+			local liquid = data.def.liquidtype ~= "none" and minetest.get_item_group(data.itemstring, "fake_liquid") == 0
 			if not forbidden_core_factoids.basics then
 				datastring = datastring .. S("Collidable: @1", yesno(data.def.walkable)) .. "\n"
 				if data.def.pointable == true then