2 files changed, 3 insertions, 5 deletions

diff --git a/lisp/epg-config.el b/lisp/epg-config.el
index 4a9cc7744cb..54328290c8f 100644
--- a/lisp/epg-config.el
+++ b/lisp/epg-config.el
@@ -148,11 +148,7 @@ Otherwise, it tries the programs listed in the entry until the
 version requirement is met."
   (unless program-alist
     (setq program-alist epg-config--program-alist))
-  (let ((entry (assq protocol program-alist))
-        ;; In many gnupg distributions (especially on Windows), the
-        ;; version string is "gpg (GnuPG) 2.2.15-unknown" or the like.
-        (version-regexp-alist (cons '("^[-._+ ]?unknown$" . -4)
-                                    version-regexp-alist)))
+  (let ((entry (assq protocol program-alist)))
     (unless entry
       (error "Unknown protocol %S" protocol))
     (cl-destructuring-bind (symbol . alist)
diff --git a/lisp/subr.el b/lisp/subr.el
index e50a52e2f53..76b0e4b3944 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -5325,6 +5325,8 @@ Usually the separator is \".\", but it can be any other string.")
     ("^[-._+]$"                                           . -4)
     ;; treat "1.2.3-CVS" as snapshot release
     ("^[-._+ ]?\\(cvs\\|git\\|bzr\\|svn\\|hg\\|darcs\\)$" . -4)
+    ;; treat "-unknown" the same as snapshots.
+    ("^[-._+ ]?unknown$"                                  . -4)
     ("^[-._+ ]?alpha$"                                    . -3)
     ("^[-._+ ]?beta$"                                     . -2)
     ("^[-._+ ]?\\(pre\\|rc\\)$"                           . -1))