diff --git a/ghc/compiler/basicTypes/Id.hi-boot b/ghc/compiler/basicTypes/Id.hi-boot
index 6473716d22598caec81846ef87222fe9996a9f78..f9f54481c2861837912cf80c8f97cc65ba772b28 100644
--- a/ghc/compiler/basicTypes/Id.hi-boot
+++ b/ghc/compiler/basicTypes/Id.hi-boot
@@ -1,10 +1,7 @@
 _interface_ Id 1
 _exports_
 Id Id GenId StrictnessMark(MarkedStrict NotMarkedStrict) dataConArgTys idType isNullaryDataCon mkDataCon mkTupleCon nmbrId pprId;
--- _instances_
--- instance {Outputable.Outputable Id} = $d4;
 _declarations_
--- 1 $4 _:_ {Outputable.Outputable Id} ;;
 1 type Id = Id.GenId Type.Type ;
 1 data GenId ty ;
 1 data StrictnessMark = MarkedStrict | NotMarkedStrict ;