(tls-certtool-program): Fix custom type.

diff --git a/lisp/net/tls.el b/lisp/net/tls.el
index 0f4b1e57c14bfb10c99539ff3635def9a9817636..3a9f19c819ca7667491825c360158304d2c04601 100644 (file)
--- a/lisp/net/tls.el
+++ b/lisp/net/tls.el
@@ -86,7 +86,7 @@ The default is what GNUTLS's \"gnutls-cli\" or OpenSSL's
   "Name of  GnuTLS certtool.
 Used by `tls-certificate-information'."
   :version "22.1"
-  :type '(repeat string)
+  :type 'string
   :group 'tls)
 
 (defun tls-certificate-information (der)