diff --git a/acme-tinier.pl b/acme-tinier.pl
index 6ff2a86..1c32124 100755
--- a/acme-tinier.pl
+++ b/acme-tinier.pl
@@ -57,7 +57,7 @@ sub get {
 	my $resp = communicate(@args, $url, $data);
 	die 'cannot download' if $? >> 8;
 	my ($code, $headers, $body) =
-		$resp =~ m#\AHTTP/\d\.\d (\d+) .*?\r\n(.*?)\r\n\r\n(.*)#sm;
+		$resp =~ m#\AHTTP/\d(?:\.\d)? (\d+) .*?\r\n(.*?)\r\n\r\n(.*)#sm;
 	return ($code, $body, { $headers =~ /(\S+?): (.*)\r\n/mg })
 }