mods/ITEMS/mcl_stairs/api.lua

@@ -71,8 +71,6 @@ end
 -- Node will be called mcl_stairs:stair_<subname>
 
 function mcl_stairs.register_stair(subname, recipeitem, groups, images, description, sounds, blast_resistance, hardness, corner_stair_texture_override)
-	groups.stair = 1
-	groups.building_block = 1
 
 	if recipeitem then
 		if not images then
@@ -92,6 +90,9 @@ function mcl_stairs.register_stair(subname, recipeitem, groups, images, descript
 		end
 	end
 
+	groups.stair = 1
+	groups.building_block = 1
+
 	minetest.register_node(":mcl_stairs:stair_" .. subname, {
 		description = description,
 		_doc_items_longdesc = S("Stairs are useful to reach higher places by walking over them; jumping is not required. Placing stairs in a corner pattern will create corner stairs. Stairs placed on the ceiling or at the upper half of the side of a block will be placed upside down."),