diff --git a/kms.php b/kms.php
index 8d11187..c9e266e 100755
--- a/kms.php
+++ b/kms.php
@@ -40,6 +40,10 @@ pcntl_signal(SIGINT, function() { // receive SIGINT signal
     subExit($nginx['pidFile'], $phpFpm['pidFile'], $vlmcsd['pidFile']);
 });
 
+if (in_array('--debug', $argv)) { // enter debug mode
+    logging::$logLevel = logging::DEBUG;
+}
+
 $KMS_PORT = 1688; // kms expose port -> only in message output
 if (sizeof(getopt('', ['port:'])) == 1) { // port option
     $KMS_PORT = getopt('', ['port:'])['port'];
@@ -47,11 +51,10 @@ if (sizeof(getopt('', ['port:'])) == 1) { // port option
         $KMS_PORT = end($KMS_PORT);
     }
 }
-
-
-if (in_array('--debug', $argv)) { // enter debug mode
-    logging::$logLevel = logging::DEBUG;
-}
+logging::debug('KMS Server Port -> ' . $KMS_PORT);
+$php_env_file = fopen('/etc/nginx/kms_params', 'w');
+fwrite($php_env_file, 'fastcgi_param KMS_PORT "' . $KMS_PORT . '";' . PHP_EOL);
+fclose($php_env_file);
 
 logging::info('Loading kms-server (' . $VERSION . ')');
 new Process($nginx['command']);
diff --git a/nginx/kms.conf b/nginx/kms.conf
index 7558a2d..a6cb4a0 100644
--- a/nginx/kms.conf
+++ b/nginx/kms.conf
@@ -16,6 +16,7 @@ server {
         if ($http_user_agent ~* (curl|wget)) {
             set $query_param $query_param&cli=true;
         }
+        include kms_params;
         include fastcgi_params;
         fastcgi_pass 127.0.0.1:9000;
         fastcgi_param QUERY_STRING $query_param;
diff --git a/src/Basis.php b/src/Basis.php
index b01e58b..d590724 100644
--- a/src/Basis.php
+++ b/src/Basis.php
@@ -65,11 +65,10 @@ function getHost(): string {
 }
 
 function getPort(): int {
-    // TODO: check env
-
-    echo 'KMS_PORT -> ' . getenv("KMS_PORT");
-
-    return 1688;
+    if (getenv("KMS_PORT") == null) {
+        return 1688; // default server port
+    }
+    return intval(getenv("KMS_PORT"));
 }
 
 function officeInfo(): array { // office dir and kms key for different version