diff --git a/nix/overlay-ghc962.nix b/nix/overlay-ghc962.nix
index 81f9d2ec6d..ca6fde522a 100644
--- a/nix/overlay-ghc962.nix
+++ b/nix/overlay-ghc962.nix
@@ -24,9 +24,6 @@ in
         };
     });
 
-  # Latest hackage revision is not yet in nixpkgs.
-  prettyprinter-interp = doJailbreak prev.prettyprinter-interp;
-
   # Marked as broken in nixpkgs, since it specifies much older dependencies
   # than the defaults in nixpkgs.
   rewrite-inspector = doJailbreak (markUnbroken prev.rewrite-inspector);