1 files changed, 2 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/core/TypeOps.scala b/src/dotty/tools/dotc/core/TypeOps.scala
index 54846087f..bb9566b6f 100644
--- a/src/dotty/tools/dotc/core/TypeOps.scala
+++ b/src/dotty/tools/dotc/core/TypeOps.scala
@@ -6,6 +6,7 @@ import Contexts._, Types._, Symbols._, Names._, Flags._, Scopes._
 import SymDenotations._, Denotations.SingleDenotation
 import config.Printers._
 import util.Positions._
+import NameOps._
 import Decorators._
 import StdNames._
 import Annotations._
@@ -382,7 +383,7 @@ trait TypeOps { this: Context => // TODO: Make standalone object.
     var formals: SimpleMap[TypeName, Symbol] = SimpleMap.Empty // A map of all formal parent parameter
 
     // Strip all refinements from parent type, populating `refinements` and `formals` maps.
-    def normalizeToRef(tp: Type): TypeRef = tp.dealias match {
+    def normalizeToRef(tp: Type): TypeRef = tp.dealias.BetaReduce match {
       case tp: TypeRef =>
         tp
       case tp @ RefinedType(tp1, name: TypeName, rinfo) =>