diff --git a/gnu/system/locale.scm b/gnu/system/locale.scm
index 689d238d1a3..18bbe5ba32b 100644
--- a/gnu/system/locale.scm
+++ b/gnu/system/locale.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2015, 2016, 2017, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2014, 2015, 2016, 2017, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -148,7 +148,7 @@ data format changes between libc versions."
 (define %default-locale-libcs
   ;; The libcs for which we build locales by default.
   ;; List the previous and current libc to ease transition.
-  (list glibc-2.29 glibc))
+  (list glibc))
 
 (define %default-locale-definitions
   ;; Arbitrary set of locales that are built by default.  They are here mostly