diff --git a/src/main/java/li/cil/oc2/common/bus/AbstractItemDeviceBusElement.java b/src/main/java/li/cil/oc2/common/bus/AbstractItemDeviceBusElement.java
index f992738b..2fe208b9 100644
--- a/src/main/java/li/cil/oc2/common/bus/AbstractItemDeviceBusElement.java
+++ b/src/main/java/li/cil/oc2/common/bus/AbstractItemDeviceBusElement.java
@@ -86,6 +86,10 @@ public abstract class AbstractItemDeviceBusElement extends AbstractGroupingDevic
     }
 
     protected void collectSyntheticDevices(final ItemDeviceQuery query, final HashSet<ItemEntry> entries) {
+        if (entries.isEmpty()) {
+            return;
+        }
+
         final ResourceLocation registryName = query.getItemStack().getItem().getRegistryName();
         if (registryName != null) {
             final String itemName = registryName.toString();