diff --git a/pkgs/development/interpreters/perl/default.nix b/pkgs/development/interpreters/perl/default.nix
index 9c3c34c73aad1..78d1cc5b98d34 100644
--- a/pkgs/development/interpreters/perl/default.nix
+++ b/pkgs/development/interpreters/perl/default.nix
@@ -121,9 +121,6 @@ let
         EOF
       '' + optionalString stdenv.isDarwin ''
         substituteInPlace hints/darwin.sh --replace "env MACOSX_DEPLOYMENT_TARGET=10.3" ""
-      '' + optionalString (!enableThreading) ''
-        # We need to do this because the bootstrap doesn't have a static libpthread
-        sed -i 's,\(libswanted.*\)pthread,\1,g' Configure
       '';
 
     # Default perl does not support --host= & co.
diff --git a/pkgs/stdenv/linux/bootstrap-tools/scripts/unpack-bootstrap-tools.sh b/pkgs/stdenv/linux/bootstrap-tools/scripts/unpack-bootstrap-tools.sh
index f394869ea915b..b79c22478eed7 100644
--- a/pkgs/stdenv/linux/bootstrap-tools/scripts/unpack-bootstrap-tools.sh
+++ b/pkgs/stdenv/linux/bootstrap-tools/scripts/unpack-bootstrap-tools.sh
@@ -29,7 +29,7 @@ for i in $out/bin/* $out/libexec/gcc/*/*/*; do
         ./patchelf --set-interpreter $LD_BINARY --set-rpath $out/lib --force-rpath "$i"
 done
 
-for i in $out/lib/librt-*.so $out/lib/libpcre*; do
+for i in $out/lib/librt-*.so $out/lib/libpcre* $out/lib/libpthread-*.so; do
     if [ -L "$i" ]; then continue; fi
     echo patching "$i"
     $out/bin/patchelf --set-rpath $out/lib --force-rpath "$i"
diff --git a/pkgs/stdenv/linux/default.nix b/pkgs/stdenv/linux/default.nix
index e9104dd88cfa1..48f6d054b159c 100644
--- a/pkgs/stdenv/linux/default.nix
+++ b/pkgs/stdenv/linux/default.nix
@@ -212,13 +212,6 @@ in
         gcc-unwrapped coreutils gnugrep;
 
       ${localSystem.libc} = getLibc prevStage;
-
-      # A threaded perl build needs glibc/libpthread_nonshared.a,
-      # which is not included in bootstrapTools, so disable threading.
-      # This is not an issue for the final stdenv, because this perl
-      # won't be included in the final stdenv and won't be exported to
-      # top-level pkgs as an override either.
-      perl = super.perl.override { enableThreading = false; };
     };
   })