--- a/http_keepalive.t
+++ b/http_keepalive.t
@@ -49,6 +49,8 @@ http {
         keepalive_requests  2;
         keepalive_timeout   1 9;
 
+        add_header X-Conn $connection_requests:$connection_time;
+
         location / { }
         location /r {
             keepalive_requests  4;
@@ -83,7 +85,7 @@ EOF
 $t->write_file('safari', '');
 $t->write_file('none', '');
 $t->write_file('zero', '');
-$t->try_run('no keepalive_time')->plan(20);
+$t->try_run('no keepalive_time')->plan(21);
 
 ###############################################################################
 
@@ -127,6 +129,8 @@ unlike($r, qr/Connection: close/, 'keepa
 is(() = $r =~ /(200 OK)/g, 2, 'keepalive time limit requests');
 like($r, qr/Connection: close/, 'keepalive time limit connection');
 
+like($r, qr/X-Conn: 1:0.*X-Conn: 2:[^0]/s, 'keepalive time limit variables');
+
 # cancel keepalive on EOF while discarding body
 
 my $s = http(<<EOF, start => 1);