diff --git a/src/main/java/com/direwolf20/laserio/common/network/handler/PacketOpenFilter.java b/src/main/java/com/direwolf20/laserio/common/network/handler/PacketOpenFilter.java
index 3a24bd78..53ada5d3 100644
--- a/src/main/java/com/direwolf20/laserio/common/network/handler/PacketOpenFilter.java
+++ b/src/main/java/com/direwolf20/laserio/common/network/handler/PacketOpenFilter.java
@@ -90,6 +90,7 @@ public AbstractContainerMenu createMenu(int windowId, Inventory playerInventory,
             };
             sender.openMenu(containerProvider, (buf -> {
                 ItemStack.OPTIONAL_STREAM_CODEC.encode(buf, filterItem);
+                ItemStack.OPTIONAL_STREAM_CODEC.encode(buf, ItemStack.EMPTY);
             }));
         }
         if (filterItem.getItem() instanceof FilterNBT) {
@@ -111,6 +112,7 @@ public AbstractContainerMenu createMenu(int windowId, Inventory playerInventory,
             };
             sender.openMenu(containerProvider, (buf -> {
                 ItemStack.OPTIONAL_STREAM_CODEC.encode(buf, filterItem);
+                ItemStack.OPTIONAL_STREAM_CODEC.encode(buf, ItemStack.EMPTY);
             }));
         }
     }