diff --git a/mods/ITEMS/mcl_portals/portal_end.lua b/mods/ITEMS/mcl_portals/portal_end.lua
index d21c3ac9be..990bba30db 100644
--- a/mods/ITEMS/mcl_portals/portal_end.lua
+++ b/mods/ITEMS/mcl_portals/portal_end.lua
@@ -69,6 +69,8 @@ end
 -- Nodes
 minetest.register_node("mcl_portals:portal_end", {
 	description = "End Portal",
+	_doc_items_longdesc = "An End portal teleports creatures and objects to the mysterious End dimension (and back!).",
+	_doc_items_usagehelp = "Stand in the portal for a moment to activate the teleportation. Entering such a portal for the first time will create a new portal in your destination. End portal which were built in the End will lead back to the Overworld. An End portal is destroyed if any of its surrounding frame blocks is destroyed.",
 	tiles = {
 		"blank.png",
 		"blank.png",
diff --git a/mods/ITEMS/mcl_portals/portal_nether.lua b/mods/ITEMS/mcl_portals/portal_nether.lua
index 02430b2312..93e53c9da6 100644
--- a/mods/ITEMS/mcl_portals/portal_nether.lua
+++ b/mods/ITEMS/mcl_portals/portal_nether.lua
@@ -72,6 +72,9 @@ end
 
 minetest.register_node("mcl_portals:portal", {
 	description = "Nether Portal",
+	_doc_items_longdesc = "A Nether portal teleports creatures and objects to the hot and dangerous Nether dimension (and back!). Enter at your own risk!",
+	_doc_items_usagehelp = "Stand in the portal for a moment to activate the teleportation. Entering a Nether portal for the first time will also create a new portal in the other dimension. If a Nether portal has been built in the Nether, it will lead to the Overworld. A Nether portal is destroyed if the any of the obsidian which surrounds it is destroyed, or if it was caught in an explosion.",
+
 	tiles = {
 		"blank.png",
 		"blank.png",