diff --git a/src/materials/farlands_reloaded.lua b/src/materials/farlands_reloaded.lua
index 7ed1955..705ae3f 100644
--- a/src/materials/farlands_reloaded.lua
+++ b/src/materials/farlands_reloaded.lua
@@ -78,6 +78,7 @@ local materials = {
     jungle_leaves = "fl_trees:jungletree_leaves",
     bowl = "",
     stick = "fl_trees:stick",
+    obsidian = "",
 }
 
 if minetest.get_modpath("basic_materials") then
diff --git a/src/materials/hades_revisited.lua b/src/materials/hades_revisited.lua
index a40f1f3..2ca5a1d 100644
--- a/src/materials/hades_revisited.lua
+++ b/src/materials/hades_revisited.lua
@@ -85,6 +85,7 @@ local materials = {
 --hades has no bowl but you get plate on eat so makes most sense?
     bowl = "hades_food:plate",
     stick = "hades_core:stick",
+    obsidian = "hades_core:obsidian",
 }
 
 if minetest.get_modpath("hades_bucket") then
diff --git a/src/materials/mineclonia.lua b/src/materials/mineclonia.lua
index 261f53b..f99fb84 100644
--- a/src/materials/mineclonia.lua
+++ b/src/materials/mineclonia.lua
@@ -72,6 +72,7 @@ local materials = {
     dirt_with_grass = "mcl_core:dirt_with_grass",
     bowl = "mcl_core:bowl",
     stick = "mcl_core:stick",
+    obsidian = "mcl_core:obsidian",
 }
 
 if minetest.get_modpath("mcl_redstone") then
diff --git a/src/materials/minetest.lua b/src/materials/minetest.lua
index feab748..1f9015e 100644
--- a/src/materials/minetest.lua
+++ b/src/materials/minetest.lua
@@ -77,6 +77,7 @@ local materials = {
     jungle_leaves = "default:jungleleaves",
     bowl = "",
     stick = "default:stick",
+    obsidian = "default:obsidian",
 }
 
 if minetest.registered_items["farming:bowl"] then