1 files changed, 3 insertions, 3 deletions
diff --git a/src/dotty/tools/dotc/transform/PatternMatcher.scala b/src/dotty/tools/dotc/transform/PatternMatcher.scala
index 2df7a9825..a47762ebe 100644
--- a/src/dotty/tools/dotc/transform/PatternMatcher.scala
+++ b/src/dotty/tools/dotc/transform/PatternMatcher.scala
@@ -134,7 +134,7 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans
       // for name-based matching, but this was an expedient route for the basics.
       def drop(tgt: Tree)(n: Int): Tree = {
         def callDirect   = tgt.select(nme.drop).appliedTo(Literal(Constant(n)))
-        def callRuntime  = ref(defn.traversableDropMethod).appliedTo(tgt, Literal(Constant(n)))
+        def callRuntime  = ref(defn.ScalaRuntime_drop).appliedTo(tgt, Literal(Constant(n)))
 
         def needsRuntime = !(tgt.tpe derivesFrom defn.SeqClass) /*typeOfMemberNamedDrop(tgt.tpe) == NoType*/
 
@@ -201,7 +201,7 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans
         // catchAll.isEmpty iff no synthetic default case needed (the (last) user-defined case is a default)
         // if the last user-defined case is a default, it will never jump to the next case; it will go immediately to matchEnd
         val catchAllDef = matchFailGen.map { _(scrutSym)}
-          .getOrElse(Throw(New(defn.MatchErrorType, List(ref(scrutSym)))))
+          .getOrElse(Throw(New(defn.MatchErrorTypeRef, List(ref(scrutSym)))))
 
         val matchFail = newSynthCaseLabel(ctx.freshName("matchFail"), MethodType(Nil, restpe))
         val catchAllDefBody = DefDef(matchFail, catchAllDef)
@@ -878,7 +878,7 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans
       // unlike in scalac SubstOnlyTreeMakers are maintained.
       val casesRebindingPropagated = casesRaw map (propagateRebindings(_, NoRebindings))
 
-      def matchFailGen = matchFailGenOverride orElse Some((arg: Symbol) => Throw(New(defn.MatchErrorType, List(ref(arg)))))
+      def matchFailGen = matchFailGenOverride orElse Some((arg: Symbol) => Throw(New(defn.MatchErrorTypeRef, List(ref(arg)))))
 
       ctx.debuglog("combining cases: " + (casesRebindingPropagated.map(_.mkString(" >> ")).mkString("{", "\n", "}")))