diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm
index 57d417de80..273f924962 100644
--- a/gnu/packages/crypto.scm
+++ b/gnu/packages/crypto.scm
@@ -7,7 +7,7 @@
 ;;; Copyright © 2016, 2017 Nikita <nikita@n0.is>
 ;;; Copyright © 2016, 2017, 2019, 2020 Eric Bavier <bavier@posteo.net>
 ;;; Copyright © 2017 Pierre Langlois <pierre.langlois@gmx.com>
-;;; Copyright © 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2018, 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
 ;;; Copyright © 2018 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2018, 2020 Nicolò Balzarotti <nicolo@nixo.xyz>
@@ -782,6 +782,7 @@ data on your platform, so the seed itself will be as random as possible.
                 (commit
                  (string-append "CRYPTOPP_"
                                 (string-replace-substring version "." "_")))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
                 "0in7rlazq91vfi519g9wr7bh87hii47cimxv7fmj0f88vhjaidq3"))))