diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/GrindStone.java b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/GrindStone.java
index 9ab0c74f7..140aa83f8 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/GrindStone.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/GrindStone.java
@@ -51,6 +51,9 @@ public class GrindStone extends MultiBlockMachine {
         recipes.add(new ItemStack(Material.ANDESITE));
         recipes.add(new ItemStack(Material.GRAVEL));
 
+        recipes.add(new ItemStack(Material.BLACKSTONE));
+        recipes.add(new ItemStack(Material.GRAVEL));
+
         recipes.add(new ItemStack(Material.DIORITE));
         recipes.add(new ItemStack(Material.GRAVEL));
 
diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/OreCrusher.java b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/OreCrusher.java
index 2225d0e0f..2a0dad3d6 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/OreCrusher.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/multiblocks/OreCrusher.java
@@ -50,6 +50,9 @@ public class OreCrusher extends MultiBlockMachine {
 
     @Override
     protected void registerDefaultRecipes(List<ItemStack> recipes) {
+        recipes.add(new ItemStack(Material.BLACKSTONE, 8));
+        recipes.add(new ItemStack(Material.RED_SAND, 1));
+
         recipes.add(new ItemStack(Material.COBBLESTONE, 8));
         recipes.add(new ItemStack(Material.SAND, 1));