2 files changed, 4 insertions, 3 deletions
diff --git a/compiler/src/dotty/tools/dotc/transform/Erasure.scala b/compiler/src/dotty/tools/dotc/transform/Erasure.scala
index d64120085..e9fe42e78 100644
--- a/compiler/src/dotty/tools/dotc/transform/Erasure.scala
+++ b/compiler/src/dotty/tools/dotc/transform/Erasure.scala
@@ -11,6 +11,7 @@ import core.Types._
 import core.Names._
 import core.StdNames._
 import core.NameOps._
+import core.NameExtractors.ShadowedName
 import core.Decorators._
 import core.Constants._
 import core.Definitions._
@@ -363,7 +364,7 @@ object Erasure extends TypeTestsCasts{
 
       def select(qual: Tree, sym: Symbol): Tree = {
         val name = tree.typeOpt match {
-          case tp: NamedType if tp.name.isShadowedName => sym.name.shadowedName
+          case tp: NamedType if tp.name.is(ShadowedName) => sym.name.derived(ShadowedName)
           case _ => sym.name
         }
         untpd.cpy.Select(tree)(qual, sym.name)
diff --git a/compiler/src/dotty/tools/dotc/transform/FirstTransform.scala b/compiler/src/dotty/tools/dotc/transform/FirstTransform.scala
index 8328e43de..803504944 100644
--- a/compiler/src/dotty/tools/dotc/transform/FirstTransform.scala
+++ b/compiler/src/dotty/tools/dotc/transform/FirstTransform.scala
@@ -19,8 +19,8 @@ import dotty.tools.dotc.core.Denotations.SingleDenotation
 import scala.collection.mutable
 import DenotTransformers._
 import typer.Checking
-import Names.Name
 import NameOps._
+import NameExtractors.AvoidClashName
 import StdNames._
 
 
@@ -129,7 +129,7 @@ class FirstTransform extends MiniPhaseTransform with InfoTransformer with Annota
           case _ =>
             false
         }
-        val uniqueName = if (nameClash) objName.avoidClashName else objName
+        val uniqueName = if (nameClash) AvoidClashName(objName) else objName
         Thicket(stat :: ModuleDef(registerCompanion(uniqueName, stat.symbol), Nil).trees)
       case stat => stat
     }