--- a/net/minecraft/tileentity/ShulkerBoxTileEntity.java
+++ b/net/minecraft/tileentity/ShulkerBoxTileEntity.java
@@ -284,6 +284,11 @@
       return this.field_190599_i == ShulkerBoxTileEntity.AnimationStatus.CLOSED;
    }
 
+   @Override
+   protected net.minecraftforge.items.IItemHandler createUnSidedHandler() {
+      return new net.minecraftforge.items.wrapper.SidedInvWrapper(this, Direction.UP);
+   }
+
    public static enum AnimationStatus {
       CLOSED,
       OPENING,
