public-inbox.cgi | 2 +-

diff --git a/public-inbox.cgi b/public-inbox.cgi
index fb435777c666b987f8a6bc085dae3b923852d6fc..313a4f22e66eae0923191ef9e654e296c79075e5 100755
--- a/public-inbox.cgi
+++ b/public-inbox.cgi
@@ -50,7 +50,7 @@ 	my %ctx;
 	if ($cgi->request_method !~ /\AGET|HEAD\z/) {
 		return r("405 Method Not Allowed");
 	}
-	my $path_info = decode_utf8($ENV{PATH_INFO});
+	my $path_info = decode_utf8($cgi->path_info);
 
 	# top-level indices and feeds
 	if ($path_info eq "/") {