diff --git a/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/ModifiedTestableItem.java b/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/ModifiedTestableItem.java
index ef237cb8..c4cbb48c 100644
--- a/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/ModifiedTestableItem.java
+++ b/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/ModifiedTestableItem.java
@@ -17,6 +17,7 @@ public class ModifiedTestableItem implements TestableItem {
     /**
      * The item.
      */
+    @Getter
     private final TestableItem handle;
 
     /**
diff --git a/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/TestableStack.java b/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/TestableStack.java
index 9a1509fe..79d3baf0 100644
--- a/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/TestableStack.java
+++ b/eco-api/src/main/java/com/willfp/eco/core/recipe/parts/TestableStack.java
@@ -19,6 +19,7 @@ public class TestableStack implements TestableItem {
     /**
      * The item.
      */
+    @Getter
     private final TestableItem handle;
 
     /**
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/recipes/ShapedRecipeListener.java b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/recipes/ShapedRecipeListener.java
index c89dd7cb..4ce82a03 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/recipes/ShapedRecipeListener.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/recipes/ShapedRecipeListener.java
@@ -6,6 +6,7 @@ import com.willfp.eco.core.items.Items;
 import com.willfp.eco.core.items.TestableItem;
 import com.willfp.eco.core.recipe.Recipes;
 import com.willfp.eco.core.recipe.parts.MaterialTestableItem;
+import com.willfp.eco.core.recipe.parts.ModifiedTestableItem;
 import com.willfp.eco.core.recipe.parts.TestableStack;
 import com.willfp.eco.core.recipe.recipes.CraftingRecipe;
 import com.willfp.eco.core.recipe.recipes.ShapedCraftingRecipe;
@@ -130,6 +131,22 @@ public class ShapedRecipeListener extends PluginDependent<EcoPlugin> implements
                     return;
                 }
             }
+            if (part instanceof ModifiedTestableItem modified) {
+                if (modified.getHandle() instanceof MaterialTestableItem) {
+                    if (Items.isCustomItem(itemStack)) {
+                        event.getInventory().setResult(new ItemStack(Material.AIR));
+                        return;
+                    }
+                }
+            }
+            if (part instanceof TestableStack modified) {
+                if (modified.getHandle() instanceof MaterialTestableItem) {
+                    if (Items.isCustomItem(itemStack)) {
+                        event.getInventory().setResult(new ItemStack(Material.AIR));
+                        return;
+                    }
+                }
+            }
         }
     }
     
@@ -156,6 +173,24 @@ public class ShapedRecipeListener extends PluginDependent<EcoPlugin> implements
                     return;
                 }
             }
+            if (part instanceof ModifiedTestableItem modified) {
+                if (modified.getHandle() instanceof MaterialTestableItem) {
+                    if (Items.isCustomItem(itemStack)) {
+                        event.getInventory().setResult(new ItemStack(Material.AIR));
+                        event.setResult(Event.Result.DENY);
+                        event.setCancelled(true);
+                        return;
+                    }
+                }
+            }
+            if (part instanceof TestableStack modified) {
+                if (modified.getHandle() instanceof MaterialTestableItem) {
+                    if (Items.isCustomItem(itemStack)) {
+                        event.getInventory().setResult(new ItemStack(Material.AIR));
+                        return;
+                    }
+                }
+            }
         }
     }
     
diff --git a/gradle.properties b/gradle.properties
index d91aa660..d2697285 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
-version = 6.5.0
+version = 6.5.1
 plugin-name = eco
\ No newline at end of file