diff --git a/gnu/packages/potassco.scm b/gnu/packages/potassco.scm
index 4e7d715e39..e6d7caa1ef 100644
--- a/gnu/packages/potassco.scm
+++ b/gnu/packages/potassco.scm
@@ -232,6 +232,7 @@ (define-public emacs-pasp-mode
               (uri (git-reference
                     (url "https://github.com/santifa/pasp-mode")
                     (commit commit)))
+              (file-name (git-file-name name version))
               (patches
                (search-patches "emacs-pasp-mode-quote-file-names.patch"))
               (sha256