diff --git a/mods/ITEMS/REDSTONE/mesecons_torch/init.lua b/mods/ITEMS/REDSTONE/mesecons_torch/init.lua
index 55692de6b..13108901e 100644
--- a/mods/ITEMS/REDSTONE/mesecons_torch/init.lua
+++ b/mods/ITEMS/REDSTONE/mesecons_torch/init.lua
@@ -64,6 +64,7 @@ mcl_torches.register_torch("mesecon_torch_on", "Redstone Torch",
 	"Redstone torches are redstone components which invert the signal of surrounding redstone components. An active component will become inactive, and an inactive component will become active. Redstone torches can be used as a quick and easy way to send a redstone to a redstone trail.",
 	[[Redstone torches can generally be placed at the side and on the top of full solid opaque blocks. The following exceptions apply:
 • Glass, fence, wall, hopper: Can only be placed on top
+• Upside-down slab/stair: Can only be placed on top
 • Soul sand, monster spawner: Placement possible
 • Glowstone and pistons: No placement possible]],
 	"jeija_torches_on_inv.png",
diff --git a/mods/ITEMS/mcl_torches/init.lua b/mods/ITEMS/mcl_torches/init.lua
index d14c4dc72..6723203e7 100644
--- a/mods/ITEMS/mcl_torches/init.lua
+++ b/mods/ITEMS/mcl_torches/init.lua
@@ -73,7 +73,7 @@ mcl_torches.register_torch = function(substring, description, doc_items_longdesc
 			-- * Fence, wall, glass, hopper: Only on top
 			-- * Monster spawner
 			-- * Slab: Only on top if upside down
-			-- * Stairs: Only on top if upside down (TODO)
+			-- * Stairs: Only on top if upside down
 
 			-- Special forbidden nodes:
 			-- * Piston
@@ -82,7 +82,7 @@ mcl_torches.register_torch = function(substring, description, doc_items_longdesc
 				if node.name ~= "mcl_nether:soul_sand" and node.name ~= "mcl_mobspawners:spawner" and
 						((not def.groups.solid) or (not def.groups.opaque)) then
 					-- Only allow top placement on these nodes
-					if def.groups.glass or node.name == "mcl_hoppers:hopper" or node.name == "mcl_hoppers:hopper_side" or def.groups.fence == 1 or def.groups.wall or def.groups.slab_top == 1 then
+					if def.groups.glass or node.name == "mcl_hoppers:hopper" or node.name == "mcl_hoppers:hopper_side" or def.groups.fence == 1 or def.groups.wall or def.groups.slab_top == 1 or (def.groups.stair == 1 and minetest.facedir_to_dir(node.param2).y ~= 0) then
 						if wdir ~= 1 then
 							return itemstack
 						end
@@ -173,6 +173,7 @@ mcl_torches.register_torch("torch",
 	"Torches are light sources which can be placed at the side or on the top of most blocks.",
 	[[Torches can generally be placed on full solid opaque blocks. The following exceptions apply:
 • Glass, fence, wall, hopper: Can only be placed on top
+• Upside-down slab/stair: Can only be placed on top
 • Soul sand, monster spawner: Placement possible
 • Glowstone and pistons: No placement possible]],
 	"default_torch_on_floor.png",