diff --git a/MIGRATION.md b/MIGRATION.md
index b99395701..a18c82b78 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -18,6 +18,7 @@ the bottom of this file. Restoration ships incrementally per feature area.
 | `-Wconf` warning suppression blocks                   | Project rule: fix warnings at source, not via suppression.                                                                                                                                              |
 | `-language:experimental.macros`                       | Scala 3 uses `inline` + `scala.quoted`; flag is a no-op.                                                                                                                                                |
 | Scala 2 macro impls (`c.universe`, blackbox/whitebox) | Replaced by Scala 3 quotes/inline during feature-area restoration; the legacy `commons-macros` module is gone.                                                                                          |
+| `misc/Delegation`                                     | Scala 2 blackbox macro deleted from the Scala 3 tree (file + test removed). Restoration not planned: write the delegating wrapper manually (`new TargetTrait { def x = source.x; ... }`). A `@deprecated` shim shipping in the parallel Scala 2 `master` PR gives downstream a warning window before the symbol disappears. |
 
 ## 2. Deprecated on Scala 3
 
@@ -159,8 +160,6 @@ Full per-file list with locations is in the Backlog table below (filter rows whe
 | `core/src/main/scala/com/avsystem/commons/misc/ApplierUnapplier.scala:25`                         | Unapplier.materialize (Scala 2 macro def)                                                             | L      |
 | `core/src/main/scala/com/avsystem/commons/misc/ApplierUnapplier.scala:37`                         | ApplierUnapplier.materialize (Scala 2 macro def)                                                      | L      |
 | `core/src/main/scala/com/avsystem/commons/misc/Bidirectional.scala:6`                             | apply (Scala 2 macro def)                                                                             | L      |
-| `core/src/main/scala/com/avsystem/commons/misc/Delegation.scala:11`                               | materializeDelegation (Scala 2 macro def)                                                             | L      |
-| `core/src/main/scala/com/avsystem/commons/misc/Delegation.scala:21`                               | CurriedDelegation.apply (Scala 2 macro def)                                                           | L      |
 | `core/src/main/scala/com/avsystem/commons/misc/Implicits.scala:5`                                 | infer (Scala 2 macro def)                                                                             | L      |
 | `core/src/main/scala/com/avsystem/commons/misc/Implicits.scala:7`                                 | infer(clue) (Scala 2 macro def)                                                                       | L      |
 | `core/src/main/scala/com/avsystem/commons/misc/Implicits.scala:9`                                 | inferNonMacro (Scala 2 macro def)                                                                     | L      |
diff --git a/core/src/main/scala/com/avsystem/commons/misc/Delegation.scala b/core/src/main/scala/com/avsystem/commons/misc/Delegation.scala
deleted file mode 100644
index dcd8f8e24..000000000
--- a/core/src/main/scala/com/avsystem/commons/misc/Delegation.scala
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.avsystem.commons
-package misc
-
-/** A typeclass which witnesses that type `A` can be wrapped into trait or abstract class `B`
-  */
-trait Delegation[A, B] {
-  def delegate(a: A): B
-}
-
-object Delegation {
-  // TODO[scala3-port]: materializeDelegation (Scala 2 macro def) (L)
-  implicit def materializeDelegation[A, B]: Delegation[A, B] = ???
-
-  /** Provides following syntax:
-    *
-    * Delegation[TargetType](value)
-    */
-  def apply[B] = new CurriedDelegation[B]
-
-  class CurriedDelegation[B] {
-    // TODO[scala3-port]: CurriedDelegation.apply (Scala 2 macro def) (L)
-    def apply[A](source: A): B = ???
-  }
-}
diff --git a/core/src/test/scala/com/avsystem/commons/misc/DelegationTest.scala b/core/src/test/scala/com/avsystem/commons/misc/DelegationTest.scala
deleted file mode 100644
index 1d0c0d966..000000000
--- a/core/src/test/scala/com/avsystem/commons/misc/DelegationTest.scala
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.avsystem.commons
-package misc
-
-import org.scalatest.funsuite.AnyFunSuite
-
-class DelegationTest extends AnyFunSuite {
-  trait Destination[T] {
-    val te: T
-    def simple(omg: Int): String
-    def meth[C[+X] >: Null <: Iterable[X]](map: Map[T, C[String]]): C[(T, String)]
-    def multi(a: String)(b: String): String
-    def vararg(values: String*): String
-  }
-
-  class Source {
-    val te: Double = 3.14
-    def simple(omg: Int): String = omg.toString
-    def meth[C[+X] >: Null <: Iterable[X]](map: Map[Double, C[String]]): C[(Double, String)] = null
-    def multi(a: String)(b: String): String = a + b
-    def vararg(values: String*): String = values.mkString("")
-  }
-
-  test("simple test") {
-    val source = new Source
-    val destination = Delegation[Destination[Double]](source)
-
-    assert(source.te == destination.te)
-    assert(source.simple(42) == destination.simple(42))
-    assert(source.meth[List](Map.empty) == destination.meth[List](Map.empty))
-    assert(source.multi("4")("2") == destination.multi("4")("2"))
-    assert(source.vararg("4", "2") == destination.vararg("4", "2"))
-  }
-}