diff --git a/pkgs/development/interpreters/perl/default.nix b/pkgs/development/interpreters/perl/default.nix
index 751b9667a1f..8f8b63a261e 100644
--- a/pkgs/development/interpreters/perl/default.nix
+++ b/pkgs/development/interpreters/perl/default.nix
@@ -1,21 +1,9 @@
 { config, lib, stdenv, fetchurl, pkgs, buildPackages, callPackage
-, enableThreading ? stdenv ? glibc, coreutils, makeWrapper
+, enableThreading ? true, coreutils, makeWrapper
 }:
 
 with lib;
 
-# We can only compile perl with threading on platforms where we have a
-# real glibc in the stdenv.
-#
-# Instead of silently building an unthreaded perl if this is not the
-# case, we force callers to disableThreading explicitly, therefore
-# documenting the platforms where the perl is not threaded.
-#
-# In the case of stdenv linux boot stage1 it's not possible to use
-# threading because of the simpleness of the bootstrap glibc, so we
-# use enableThreading = false there.
-assert enableThreading -> (stdenv ? glibc);
-
 let
 
   libc = if stdenv.cc.libc or null != null then stdenv.cc.libc else "/usr";