diff --git a/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockEntityItemRequirement.java b/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockEntityItemRequirement.java
index f5e6ec689..bfcb9ef69 100644
--- a/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockEntityItemRequirement.java
+++ b/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockEntityItemRequirement.java
@@ -4,8 +4,6 @@ import net.minecraft.world.level.block.state.BlockState;
 
 public interface ISpecialBlockEntityItemRequirement {
 
-	default ItemRequirement getRequiredItems(BlockState state) {
-		return ItemRequirement.INVALID;
-	}
+	public ItemRequirement getRequiredItems(BlockState state);
 
 }
diff --git a/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockItemRequirement.java b/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockItemRequirement.java
index 8fa55d82b..26729dc49 100644
--- a/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockItemRequirement.java
+++ b/src/main/java/com/simibubi/create/content/schematics/ISpecialBlockItemRequirement.java
@@ -5,8 +5,6 @@ import net.minecraft.world.level.block.state.BlockState;
 
 public interface ISpecialBlockItemRequirement {
 
-	default ItemRequirement getRequiredItems(BlockState state, BlockEntity te) {
-		return ItemRequirement.INVALID;
-	}
+	public ItemRequirement getRequiredItems(BlockState state, BlockEntity te);
 
 }
diff --git a/src/main/java/com/simibubi/create/content/schematics/ISpecialEntityItemRequirement.java b/src/main/java/com/simibubi/create/content/schematics/ISpecialEntityItemRequirement.java
index f5bd10caf..7cdf23c5e 100644
--- a/src/main/java/com/simibubi/create/content/schematics/ISpecialEntityItemRequirement.java
+++ b/src/main/java/com/simibubi/create/content/schematics/ISpecialEntityItemRequirement.java
@@ -2,8 +2,6 @@ package com.simibubi.create.content.schematics;
 
 public interface ISpecialEntityItemRequirement {
 
-	default ItemRequirement getRequiredItems() {
-		return ItemRequirement.INVALID;
-	}
+	public ItemRequirement getRequiredItems();
 	
 }
diff --git a/src/main/java/com/simibubi/create/foundation/tileEntity/SmartTileEntity.java b/src/main/java/com/simibubi/create/foundation/tileEntity/SmartTileEntity.java
index f47e60031..1c91eeda8 100644
--- a/src/main/java/com/simibubi/create/foundation/tileEntity/SmartTileEntity.java
+++ b/src/main/java/com/simibubi/create/foundation/tileEntity/SmartTileEntity.java
@@ -7,6 +7,7 @@ import java.util.Map;
 import java.util.function.Consumer;
 
 import com.simibubi.create.api.event.TileEntityBehaviourEvent;
+import com.simibubi.create.content.schematics.ISpecialBlockEntityItemRequirement;
 import com.simibubi.create.content.schematics.ItemRequirement;
 import com.simibubi.create.foundation.advancement.AdvancementBehaviour;
 import com.simibubi.create.foundation.advancement.CreateAdvancement;
@@ -25,7 +26,7 @@ import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.fluids.capability.CapabilityFluidHandler;
 import net.minecraftforge.items.CapabilityItemHandler;
 
-public abstract class SmartTileEntity extends CachedRenderBBTileEntity implements IPartialSafeNBT, IInteractionChecker {
+public abstract class SmartTileEntity extends CachedRenderBBTileEntity implements IPartialSafeNBT, IInteractionChecker, ISpecialBlockEntityItemRequirement {
 
 	private final Map<BehaviourType<?>, TileEntityBehaviour> behaviours = new HashMap<>();
 	private boolean initialized = false;
@@ -176,7 +177,7 @@ public abstract class SmartTileEntity extends CachedRenderBBTileEntity implement
 		behaviour.initialize();
 	}
 
-	public ItemRequirement getRequiredItems() {
+	public ItemRequirement getRequiredItems(BlockState state) {
 		return behaviours.values()
 			.stream()
 			.reduce(ItemRequirement.NONE, (r, b) -> r.union(b.getRequiredItems()), (r, r1) -> r.union(r1));