diff --git a/src/main/kotlin/org/neoflock/neocomputers/block/RelayBlock.kt b/src/main/kotlin/org/neoflock/neocomputers/block/RelayBlock.kt
index 84cb86c..28ac292 100644
--- a/src/main/kotlin/org/neoflock/neocomputers/block/RelayBlock.kt
+++ b/src/main/kotlin/org/neoflock/neocomputers/block/RelayBlock.kt
@@ -119,6 +119,7 @@ class RelayEntity(blockPos: BlockPos, blockState: BlockState): SingleDeviceBlock
                 sendQueuedPacket()
             }
         }
+        deviceNode.markChanged()
         val cap = computeRelayCapacity()
         while(queue.size > cap) queue.removeLast()
         active = queue.isNotEmpty()