--- a/scgi_merge_params.t
+++ b/scgi_merge_params.t
@@ -46,22 +46,22 @@ http {
     scgi_param HTTP_X_BLAH "blah";
 
     server {
-        listen       127.0.0.1:8080;
+        listen       127.0.0.1:%%PORT_0%%;
         server_name  localhost;
 
         scgi_cache  NAME;
 
         location / {
-            scgi_pass    127.0.0.1:8081;
+            scgi_pass    127.0.0.1:%%PORT_1%%;
         }
 
         location /no/ {
-            scgi_pass    127.0.0.1:8081;
+            scgi_pass    127.0.0.1:%%PORT_1%%;
             scgi_cache   off;
         }
 
         location /custom/ {
-            scgi_pass    127.0.0.1:8081;
+            scgi_pass    127.0.0.1:%%PORT_1%%;
             scgi_param   SCGI 1;
             scgi_param   HTTP_X_BLAH  "custom";
         }
@@ -115,7 +115,7 @@ EOF
 sub scgi_daemon {
 	my $server = IO::Socket::INET->new(
 		Proto => 'tcp',
-		LocalHost => '127.0.0.1:8081',
+		LocalHost => '127.0.0.1:' . port(1),
 		Listen => 5,
 		Reuse => 1
 	)
@@ -133,7 +133,7 @@ sub scgi_daemon {
 		my $blah = $request->env->{HTTP_X_BLAH} || '';
 
 		$request->connection()->print(<<EOF);
-Location: http://127.0.0.1:8080/redirect
+Location: http://localhost/redirect
 Content-Type: text/html
 
 ims=$ims;iums=$iums;blah=$blah;