diff --git a/gnu/packages/nss.scm b/gnu/packages/nss.scm
index bf2003d927..5e719ad5b8 100644
--- a/gnu/packages/nss.scm
+++ b/gnu/packages/nss.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2021 Mark H Weaver <mhw@netris.org>
-;;; Copyright © 2016, 2017, 2018, 2019, 2021 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016-2019, 2021, 2022 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2020, 2021 Marius Bakke <marius@gnu.org>
 ;;; Copyright © 2020 Jonathan Brielmaier <jonathan.brielmaier@web.de>
@@ -158,6 +158,9 @@ (define-public nss
                   (ice-9 ftw)
                   (ice-9 match)
                   (srfi srfi-26))
+       #:tests? ,(not (or (%current-target-system)
+                          ;; Tests take more than 30 hours on riscv64-linux.
+                          (target-riscv64?)))
        #:phases
        (modify-phases %standard-phases
          (replace 'configure