diff --git a/gnu/packages/genimage.scm b/gnu/packages/genimage.scm
index c9ed6258a0..bd77e4dc33 100644
--- a/gnu/packages/genimage.scm
+++ b/gnu/packages/genimage.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2018 Danny Milosavljevic <dannym@scratchpost.org>
+;;; Copyright © 2021 Vincent Legoll <vincent.legoll@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -47,7 +48,7 @@ (define-public genimage
               (uri (git-reference
                     (url "https://github.com/pengutronix/genimage")
                     (commit (string-append "v" version))))
-              (file-name (string-append name "-" version "-checkout"))
+              (file-name (git-file-name name version))
               (sha256
                (base32
                 "15jmh17lvm3jw9c92bjarly7iwhmnfl322d91mprfv10ppb9ip54"))