diff --git a/compiler/src/dotty/tools/dotc/Compiler.scala b/compiler/src/dotty/tools/dotc/Compiler.scala
index f5a2bb4fec81..84e81801a495 100644
--- a/compiler/src/dotty/tools/dotc/Compiler.scala
+++ b/compiler/src/dotty/tools/dotc/Compiler.scala
@@ -86,7 +86,6 @@ class Compiler {
          new LiftTry,                // Put try expressions that might execute on non-empty stacks into their own methods
          new CollectNullableFields,  // Collect fields that can be nulled out after use in lazy initialization
          new ElimOuterSelect,        // Expand outer selections
-         new AugmentScala2Traits,    // Augments Scala2 traits so that super accessors are made non-private
          new ResolveSuper,           // Implement super accessors
          new FunctionXXLForwarders,  // Add forwarders for FunctionXXL apply method
          new ParamForwarding,        // Add forwarders for aliases of superclass parameters
diff --git a/compiler/src/dotty/tools/dotc/core/Flags.scala b/compiler/src/dotty/tools/dotc/core/Flags.scala
index 8fc9f1920b3c..7fd3042f67d5 100644
--- a/compiler/src/dotty/tools/dotc/core/Flags.scala
+++ b/compiler/src/dotty/tools/dotc/core/Flags.scala
@@ -378,12 +378,8 @@ object Flags {
   /** Children were queried on this class */
   val (_, _, ChildrenQueried @ _) = newFlags(56, "<children-queried>")
 
-  /** A module variable (Scala 2.x only)
-   *    /
-   *  A Scala 2.x trait that has been augmented.
-   *  This is set in `AugmentScala2Trait` when the trait is augmented.
-   */
-  val (_, Scala2ModuleVar @ _, Scala2xAugmented @ _) = newFlags(57, "<modulevar>", "<scala-2.x-augmented>")
+  /** A module variable (Scala 2.x only) */
+  val (_, Scala2ModuleVar @ _, _) = newFlags(57, "<modulevar>")
 
   /** A macro */
   val (Macro @ _, _, _) = newFlags(58, "<macro>")
diff --git a/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala b/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
index 85c8f6a8d071..cd071607d41a 100644
--- a/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
+++ b/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
@@ -455,8 +455,12 @@ class Scala2Unpickler(bytes: Array[Byte], classRoot: ClassDenotation, moduleClas
       flags = flags &~ Scala2ExpandedName
     }
     if (flags.is(Scala2SuperAccessor)) {
-      name = name.asTermName.unmangle(SuperAccessorName)
-      flags = flags &~ Scala2SuperAccessor
+      /* Scala 2 super accessors are pickled as private, but are compiled as public expanded.
+       * Dotty super accessors, however, are already pickled as public expanded.
+       * We bridge the gap right now.
+       */
+      name = name.asTermName.unmangle(SuperAccessorName).expandedName(owner)
+      flags = flags &~ (Scala2SuperAccessor | Private)
     }
     name = name.mapLast(_.decode)
 
@@ -1308,4 +1312,3 @@ class Scala2Unpickler(bytes: Array[Byte], classRoot: ClassDenotation, moduleClas
         errorBadSignature("expected an TypeDef (" + other + ")")
     }
 }
-
diff --git a/compiler/src/dotty/tools/dotc/transform/AugmentScala2Traits.scala b/compiler/src/dotty/tools/dotc/transform/AugmentScala2Traits.scala
deleted file mode 100644
index 280977c78b93..000000000000
--- a/compiler/src/dotty/tools/dotc/transform/AugmentScala2Traits.scala
+++ /dev/null
@@ -1,54 +0,0 @@
-package dotty.tools.dotc
-package transform
-
-import core._
-import MegaPhase._
-import Contexts.{Context, ctx}
-import Flags._
-import SymUtils._
-import Symbols._
-import Types._
-import Decorators._
-import DenotTransformers._
-import Annotations._
-import StdNames._
-import NameOps._
-import NameKinds.{ExpandedName, TraitSetterName}
-import ast.Trees._
-
-object AugmentScala2Traits {
-  val name: String = "augmentScala2Traits"
-}
-
-/** This phase augments Scala2 traits to fix up super accessors.
- *
- *  Strangely, Scala 2 super accessors are pickled as private, but are compiled as public expanded.
- *  In this phase we expand them and make them non-private, so that `ResolveSuper` does something meaningful.
- *
- *  TODO Should we already drop the Private flag when reading from Scala2 pickles in Scala2Unpickler?
- */
-class AugmentScala2Traits extends MiniPhase with IdentityDenotTransformer { thisPhase =>
-  import ast.tpd._
-
-  override def changesMembers: Boolean = true
-
-  override def phaseName: String = AugmentScala2Traits.name
-
-  override def transformTemplate(impl: Template)(using Context): Template = {
-    val cls = impl.symbol.owner.asClass
-    for (mixin <- cls.mixins) {
-      val erasedMixin = TypeErasure.normalizeClass(mixin)
-      if (erasedMixin.is(Scala2x) && !erasedMixin.is(Scala2xAugmented))
-        augmentScala2Trait(erasedMixin)
-    }
-    impl
-  }
-
-  private def augmentScala2Trait(mixin: ClassSymbol)(using Context): Unit = {
-    for (sym <- mixin.info.decls) {
-      if (sym.isSuperAccessor)
-        sym.ensureNotPrivate.installAfter(thisPhase)
-    }
-    mixin.setFlagFrom(thisPhase, Scala2xAugmented)
-  }
-}
diff --git a/compiler/src/dotty/tools/dotc/transform/ResolveSuper.scala b/compiler/src/dotty/tools/dotc/transform/ResolveSuper.scala
index f58359946b17..f4dbf80e85b0 100644
--- a/compiler/src/dotty/tools/dotc/transform/ResolveSuper.scala
+++ b/compiler/src/dotty/tools/dotc/transform/ResolveSuper.scala
@@ -34,7 +34,6 @@ class ResolveSuper extends MiniPhase with IdentityDenotTransformer { thisPhase =
   override def phaseName: String = ResolveSuper.name
 
   override def runsAfter: Set[String] = Set(ElimByName.name, // verified empirically, need to figure out what the reason is.
-                               AugmentScala2Traits.name,
                                PruneErasedDefs.name) // Erased decls make `isCurrent` work incorrectly
 
   override def changesMembers: Boolean = true // the phase adds super accessors