diff --git a/config.h.in b/config.h.in
index c87008b6a9..44a34072a4 100644
--- a/config.h.in
+++ b/config.h.in
@@ -150,9 +150,6 @@
 /* Override abi-tags ABI version if necessary.  */
 #undef  __ABI_TAG_VERSION
 
-/* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
-#undef	HAVE_MIG_RETCODE
-
 /* Mach specific: define if the `host_page_size' RPC is available.  */
 #undef	HAVE_HOST_PAGE_SIZE
 
diff --git a/sysdeps/mach/configure b/sysdeps/mach/configure
index b08872b8bc..df20d8640f 100644
--- a/sysdeps/mach/configure
+++ b/sysdeps/mach/configure
@@ -485,40 +485,4 @@ if test $libc_cv_mach_i386_gdt = yes; then
 fi
 
 
-
-# See if mig groks `retcode'.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $MIG supports the retcode keyword" >&5
-$as_echo_n "checking whether $MIG supports the retcode keyword... " >&6; }
-if ${hurd_cv_mig_retcode+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.defs <<\EOF
-#include <mach/std_types.defs>
-#include <mach/mach_types.defs>
-subsystem foobar 1000;
-type reply_port_t = polymorphic | MACH_MSG_TYPE_PORT_SEND_ONCE
-	ctype: mach_port_t;
-simpleroutine foobar_reply (
-	reply_port: reply_port_t;
-	err: kern_return_t, RetCode);
-EOF
-if { ac_try='CC="${CC}" ${MIG-false} -n conftest.defs 1>&5'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then
-  hurd_cv_mig_retcode=yes
-else
-  hurd_cv_mig_retcode=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hurd_cv_mig_retcode" >&5
-$as_echo "$hurd_cv_mig_retcode" >&6; }
-if test $hurd_cv_mig_retcode = yes; then
-  $as_echo "#define HAVE_MIG_RETCODE 1" >>confdefs.h
-
-fi
-
 CPPFLAGS=$OLD_CPPFLAGS
diff --git a/sysdeps/mach/configure.ac b/sysdeps/mach/configure.ac
index 537677c1d7..869cc9f820 100644
--- a/sysdeps/mach/configure.ac
+++ b/sysdeps/mach/configure.ac
@@ -104,30 +104,4 @@ if test $libc_cv_mach_i386_gdt = yes; then
   AC_DEFINE([HAVE_I386_SET_GDT])
 fi
 
-dnl Swiped from hurd/aclocal.m4
-AC_DEFUN([hurd_MIG_RETCODE], [dnl
-# See if mig groks `retcode'.
-AC_CACHE_CHECK(whether $MIG supports the retcode keyword, hurd_cv_mig_retcode,
-[cat > conftest.defs <<\EOF
-#include <mach/std_types.defs>
-#include <mach/mach_types.defs>
-subsystem foobar 1000;
-type reply_port_t = polymorphic | MACH_MSG_TYPE_PORT_SEND_ONCE
-	ctype: mach_port_t;
-simpleroutine foobar_reply (
-	reply_port: reply_port_t;
-	err: kern_return_t, RetCode);
-EOF
-if AC_TRY_COMMAND([CC="${CC}" ${MIG-false} -n conftest.defs 1>&AS_MESSAGE_LOG_FD]); then
-  hurd_cv_mig_retcode=yes
-else
-  hurd_cv_mig_retcode=no
-fi
-rm -f conftest*])
-if test $hurd_cv_mig_retcode = yes; then
-  AC_DEFINE(HAVE_MIG_RETCODE)
-fi])
-
-hurd_MIG_RETCODE
-
 CPPFLAGS=$OLD_CPPFLAGS