diff --git a/src/machines/java/com/enderio/machines/common/blockentity/DrainBlockEntity.java b/src/machines/java/com/enderio/machines/common/blockentity/DrainBlockEntity.java
index 428fb9aac9..e22233832d 100644
--- a/src/machines/java/com/enderio/machines/common/blockentity/DrainBlockEntity.java
+++ b/src/machines/java/com/enderio/machines/common/blockentity/DrainBlockEntity.java
@@ -64,6 +64,7 @@ public DrainBlockEntity(BlockPos worldPosition, BlockState blockState) {
 
         addDataSlot(NetworkDataSlot.FLUID_STACK.create(() -> TANK.getFluid(this), fluid -> TANK.setFluid(this, fluid)));
 
+        // TODO: rubbish way of having a default. use an interface instead?
         if (!hasData(MachineAttachments.ACTION_RANGE)) {
             setData(MachineAttachments.ACTION_RANGE, new ActionRange(5, false));
         }