diff --git a/sbroad-core/src/ir/transformation/redistribution.rs b/sbroad-core/src/ir/transformation/redistribution.rs
index 0085a99be0691969e37f3fadb14864106770d36a..29c1c4953c0f2986179b2abb2960e5a681597f6d 100644
--- a/sbroad-core/src/ir/transformation/redistribution.rs
+++ b/sbroad-core/src/ir/transformation/redistribution.rs
@@ -154,6 +154,9 @@ pub enum MotionOpcode {
     ///
     /// Note: currently this opcode is only used for execution of union all having global
     /// child and sharded child.
+    ///
+    /// Note: look at `disable_serialize_as_empty_opcode` to see where we set the flag value
+    /// to `false`.
     SerializeAsEmptyTable(bool),
     RemoveDuplicates,
 }