diff --git a/gnu/packages/guile.scm b/gnu/packages/guile.scm
index 15d5b2cdf28..9c7ab704155 100644
--- a/gnu/packages/guile.scm
+++ b/gnu/packages/guile.scm
@@ -15,7 +15,7 @@
 ;;; Copyright © 2018 Danny Milosavljevic <dannym@scratchpost.org>
 ;;; Copyright © 2018 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2019 Taylan Kammer <taylan.kammer@gmail.com>
-;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -360,6 +360,7 @@ without requiring the source code to be rewritten.")
                 (uri (git-reference
                       (url "https://git.savannah.gnu.org/git/guile.git")
                       (commit commit)))
+                (file-name (git-file-name name version))
                 (sha256
                  (base32
                   "09i1c77h2shygylfk0av31jsc1my6zjl230b2cx6vyl58q8c0cqy"))))