diff --git a/auth.php b/auth.php
index ef7a39a..2359717 100755
--- a/auth.php
+++ b/auth.php
@@ -19,8 +19,6 @@
 
 define("ROOT_DIR", __DIR__);
 require_once(ROOT_DIR . "/helpers/config.php");
-$config = new uConfig();
-
 require_once(ROOT_DIR . "/lang.php");
 require_once(ROOT_DIR . "/helpers/user.php");
 
@@ -31,12 +29,12 @@ $sid = session_id();
 // check for forced login to authorize admin in case of public access
 $force_login = (isset($_REQUEST['force_login']) ? $_REQUEST['force_login'] : false);
 if ($force_login) {
-  $config::$require_authentication = true;
+  uConfig::$require_authentication = true;
 }
 
 $user = new uUser();
 $user->getFromSession();
-if (!$user->isValid && ($config::$require_authentication || defined('headless'))) {
+if (!$user->isValid && (uConfig::$require_authentication || defined('headless'))) {
   /* authentication */
   $login = (isset($_REQUEST['user']) ? $_REQUEST['user'] : NULL);
   $pass = (isset($_REQUEST['pass']) ? $_REQUEST['pass'] : NULL);
diff --git a/helpers/config.php b/helpers/config.php
index fec4073..fe81286 100644
--- a/helpers/config.php
+++ b/helpers/config.php
@@ -17,6 +17,12 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
+
+ /**
+  * Initialize on file include
+  */
+  uConfig::init();
+
  /**
   * Handles config values
   */
@@ -82,18 +88,23 @@
 
     private static $fileLoaded = false;
 
+    private static $initialized = false;
+
    /**
-    * Constructor
+    * Static initializer
     */
-    public function __construct() {
-      $this->setFromFile();
-      $this->setFromCookies();
+    static public function init() {
+      if (!self::$initialized) {
+        self::setFromFile();
+        self::setFromCookies();
+        self::$initialized = true;
+      }
     }
 
    /**
     * Read config values from "/config.php" file
     */
-    private function setFromFile() {
+    private static function setFromFile() {
       $configFile = ROOT_DIR . "/config.php";
       if (self::$fileLoaded || !file_exists($configFile)) {
         return;
@@ -132,14 +143,19 @@
    /**
     * Read config values stored in cookies
     */
-    private function setFromCookies() {
+    private static function setFromCookies() {
       if (isset($_COOKIE["ulogger_api"])) { self::$mapapi = $_COOKIE["ulogger_api"]; }
       if (isset($_COOKIE["ulogger_lang"])) { self::$lang = $_COOKIE["ulogger_lang"]; }
       if (isset($_COOKIE["ulogger_units"])) { self::$units = $_COOKIE["ulogger_units"]; }
       if (isset($_COOKIE["ulogger_interval"])) { self::$interval = $_COOKIE["ulogger_interval"]; }
     }
 
-    public function isFileLoaded() {
+   /**
+    * Is config loaded from file?
+    *
+    * @return True if loaded, false otherwise
+    */
+    public static function isFileLoaded() {
       return self::$fileLoaded;
     }
 
@@ -147,7 +163,7 @@
     * Regex to test if password matches strength and length requirements.
     * Valid for both php and javascript
     */
-    public function passRegex() {
+    public static function passRegex() {
       static $regex = "";
       if (self::$pass_strength > 0) {
         // lower and upper case
diff --git a/helpers/db.php b/helpers/db.php
index b0625fe..cae9717 100644
--- a/helpers/db.php
+++ b/helpers/db.php
@@ -62,10 +62,9 @@
     */
     public static function getInstance() {
       if (!self::$instance) {
-        $config = new uConfig();
-        self::$instance = new self($config::$dbhost, $config::$dbuser, $config::$dbpass, $config::$dbname);
+        self::$instance = new self(uConfig::$dbhost, uConfig::$dbuser, uConfig::$dbpass, uConfig::$dbname);
         self::$tables = [];
-        $prefix = preg_replace('/[^a-z0-9_]/i', '', $config::$dbprefix);
+        $prefix = preg_replace('/[^a-z0-9_]/i', '', uConfig::$dbprefix);
         self::$tables['positions'] = $prefix . "positions";
         self::$tables['tracks'] = $prefix . "tracks";
         self::$tables['users'] = $prefix . "users";
diff --git a/helpers/user.php b/helpers/user.php
index 97e2395..e144890 100644
--- a/helpers/user.php
+++ b/helpers/user.php
@@ -156,8 +156,7 @@
     * @return bool True if matches, false otherwise
     */
     private function validPassStrength($password) {
-      $config = new uConfig();
-      return preg_match($config->passRegex(), $password);
+      return preg_match(uConfig::passRegex(), $password);
     }
 
    /**
@@ -225,8 +224,7 @@
     * @return bool True if admin, false otherwise
     */
     private function isAdmin($login) {
-      $config = new uConfig();
-      return (!empty($config::$admin_user) && $config::$admin_user == $login);
+      return (!empty(uConfig::$admin_user) && uConfig::$admin_user == $login);
     }
   }
 ?>
diff --git a/index.php b/index.php
index d4e9115..cb5aa18 100755
--- a/index.php
+++ b/index.php
@@ -23,7 +23,7 @@
 
   $displayUserId = NULL;
   $usersArr = [];
-  if ($user->isAdmin || $config::$public_tracks) {
+  if ($user->isAdmin || uConfig::$public_tracks) {
     // public access or admin user
     // get last position user
     $lastPosition = new uPosition();
@@ -67,27 +67,27 @@
     <link href="https://fonts.googleapis.com/css?family=Open+Sans:400,400i,700,700i&amp;subset=cyrillic" rel="stylesheet">
     <link rel="stylesheet" type="text/css" href="css/main.css">
     <script>
-      var interval = '<?= $config::$interval ?>';
+      var interval = '<?= uConfig::$interval ?>';
       var userid = '<?= ($displayUserId) ? $displayUserId : -1 ?>';
       var trackid = '<?= ($displayTrackId) ? $displayTrackId : -1 ?>';
-      var units = '<?= $config::$units ?>';
-      var mapapi = '<?= $config::$mapapi ?>';
-      var gkey = '<?= !empty($config::$gkey) ? $config::$gkey : "null" ?>';
-      var layer_ocm = '<?= $config::$layer_ocm ?>';
-      var layer_mq = '<?= $config::$layer_mq ?>';
-      var layer_osmapa = '<?= $config::$layer_osmapa ?>';
-      var layer_ump = '<?= $config::$layer_ump ?>';
-      var init_latitude = '<?= $config::$init_latitude ?>';
-      var init_longitude = '<?= $config::$init_longitude ?>';
+      var units = '<?= uConfig::$units ?>';
+      var mapapi = '<?= uConfig::$mapapi ?>';
+      var gkey = '<?= !empty(uConfig::$gkey) ? uConfig::$gkey : "null" ?>';
+      var layer_ocm = '<?= uConfig::$layer_ocm ?>';
+      var layer_mq = '<?= uConfig::$layer_mq ?>';
+      var layer_osmapa = '<?= uConfig::$layer_osmapa ?>';
+      var layer_ump = '<?= uConfig::$layer_ump ?>';
+      var init_latitude = '<?= uConfig::$init_latitude ?>';
+      var init_longitude = '<?= uConfig::$init_longitude ?>';
       var lang = <?= json_encode($lang) ?>;
       var admin = <?= json_encode($user->isAdmin) ?>;
       var auth = '<?= ($user->isValid) ? $user->login : "null" ?>';
-      var pass_regex = <?= $config->passRegex() ?>;
+      var pass_regex = <?= uConfig::passRegex() ?>;
     </script>
     <script type="text/javascript" src="js/main.js"></script>
 
-    <?php if ($config::$mapapi == "gmaps"): ?>
-      <script type="text/javascript" src="//maps.googleapis.com/maps/api/js<?= !empty($config::$gkey) ? "?key={$config::$gkey}" : "" ?>"></script>
+    <?php if (uConfig::$mapapi == "gmaps"): ?>
+      <script type="text/javascript" src="//maps.googleapis.com/maps/api/js<?= !empty(uConfig::$gkey) ? "?key=" . uConfig::$gkey : "" ?>"></script>
       <script type="text/javascript" src="js/api_gmaps.js"></script>
     <?php else: ?>
       <script type="text/javascript" src="//openlayers.org/api/OpenLayers.js"></script>
@@ -145,7 +145,7 @@
               <?php endforeach; ?>
             </select>
             <input id="latest" type="checkbox" onchange="toggleLatest();"> <?= $lang["latest"] ?><br>
-            <input type="checkbox" onchange="autoReload();"> <?= $lang["autoreload"] ?> (<a href="javascript:void(0);" onclick="setTime();"><span id="auto"><?= $config::$interval ?></span></a> s)<br>
+            <input type="checkbox" onchange="autoReload();"> <?= $lang["autoreload"] ?> (<a href="javascript:void(0);" onclick="setTime();"><span id="auto"><?= uConfig::$interval ?></span></a> s)<br>
           </form>
           <a href="javascript:void(0);" onclick="loadTrack(userid, trackid, 0);"> <?= $lang["reload"] ?></a><br>
         </div>
@@ -160,8 +160,8 @@
           <?= $lang["api"] ?><br>
           <form>
             <select name="api" onchange="loadMapAPI(this.options[this.selectedIndex].value);">
-              <option value="gmaps"<?= ($config::$mapapi == "gmaps") ? " selected" : "" ?>>Google Maps</option>
-              <option value="openlayers"<?= ($config::$mapapi == "openlayers") ? " selected" : "" ?>>OpenLayers</option>
+              <option value="gmaps"<?= (uConfig::$mapapi == "gmaps") ? " selected" : "" ?>>Google Maps</option>
+              <option value="openlayers"<?= (uConfig::$mapapi == "openlayers") ? " selected" : "" ?>>OpenLayers</option>
             </select>
           </form>
         </div>
@@ -172,7 +172,7 @@
             <select name="units" onchange="setLang(this.options[this.selectedIndex].value);">
               <?php asort($langsArr); ?>
               <?php foreach ($langsArr as $langCode => $langName): ?>
-                <option value="<?= $langCode ?>"<?= ($config::$lang == $langCode) ? " selected" : "" ?>><?= $langName ?></option>
+                <option value="<?= $langCode ?>"<?= (uConfig::$lang == $langCode) ? " selected" : "" ?>><?= $langName ?></option>
               <?php endforeach; ?>
             </select>
           </form>
@@ -182,8 +182,8 @@
           <?= $lang["units"] ?><br>
           <form>
             <select name="units" onchange="setUnits(this.options[this.selectedIndex].value);">
-              <option value="metric"<?= ($config::$units == "metric") ? " selected" : "" ?>><?= $lang["metric"] ?></option>
-              <option value="imperial"<?= ($config::$units == "imperial") ? " selected" : "" ?>><?= $lang["imperial"] ?></option>
+              <option value="metric"<?= (uConfig::$units == "metric") ? " selected" : "" ?>><?= $lang["metric"] ?></option>
+              <option value="imperial"<?= (uConfig::$units == "imperial") ? " selected" : "" ?>><?= $lang["imperial"] ?></option>
             </select>
           </form>
         </div>
@@ -207,7 +207,7 @@
 
       </div>
       <div id="menu-close" onclick="toggleMenu();">»</div>
-      <div id="footer"><a target="_blank" href="https://github.com/bfabiszewski/ulogger-server"><span class="mi">μ</span>logger</a> <?= $config::$version ?></div>
+      <div id="footer"><a target="_blank" href="https://github.com/bfabiszewski/ulogger-server"><span class="mi">μ</span>logger</a> <?= uConfig::$version ?></div>
     </div>
 
     <div id="main">
diff --git a/lang.php b/lang.php
index a2fe7be..76d25ed 100755
--- a/lang.php
+++ b/lang.php
@@ -33,12 +33,12 @@
 
   // override with translated strings if needed
   // missing strings will be displayed in English
-  if ($config::$lang != "en" && array_key_exists($config::$lang, $langsArr)) {
-    require_once(ROOT_DIR . "/lang/{$config::$lang}.php");
+  if (uConfig::$lang != "en" && array_key_exists(uConfig::$lang, $langsArr)) {
+    require_once(ROOT_DIR . "/lang/" . uConfig::$lang . ".php");
   }
 
   // choose password messages based on config
-  $lang['passrules'] = isset($lang["passrules"][$config::$pass_strength]) ? $lang["passrules"][$config::$pass_strength] : "";
-  $lang['passlenmin'] = sprintf($lang["passlenmin"], $config::$pass_lenmin);
+  $lang['passrules'] = isset($lang["passrules"][uConfig::$pass_strength]) ? $lang["passrules"][uConfig::$pass_strength] : "";
+  $lang['passlenmin'] = sprintf($lang["passlenmin"], uConfig::$pass_lenmin);
 
 ?>
\ No newline at end of file
diff --git a/scripts/setup.php b/scripts/setup.php
index 4805353..41f2238 100644
--- a/scripts/setup.php
+++ b/scripts/setup.php
@@ -27,13 +27,11 @@ $enabled = false;
 define("ROOT_DIR", dirname(__DIR__));
 require_once(ROOT_DIR . "/helpers/user.php");
 require_once(ROOT_DIR . "/helpers/config.php");
-$config = new uConfig();
-
 require_once(ROOT_DIR . "/lang.php");
 
 $command = isset($_REQUEST['command']) ? $_REQUEST['command'] : NULL;
 
-$prefix = preg_replace('/[^a-z0-9_]/i', '', $config::$dbprefix);
+$prefix = preg_replace('/[^a-z0-9_]/i', '', uConfig::$dbprefix);
 $tPositions = $prefix . "positions";
 $tTracks = $prefix . "tracks";
 $tUsers = $prefix . "users";
@@ -87,7 +85,7 @@ switch ($command) {
     $error = false;
     mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
     try {
-      $mysqli = new mysqli($config::$dbhost, $config::$dbuser, $config::$dbpass, $config::$dbname);
+      $mysqli = new mysqli(uConfig::$dbhost, uConfig::$dbuser, uConfig::$dbpass, uConfig::$dbname);
     } catch (mysqli_sql_exception $e ) {
       $messages[] = "<span class=\"warn\">{$langSetup["dbconnectfailed"]}</span>";
       $messages[] = sprintf($langSetup["serversaid"], "<b>" . $e->getMessage() . "</b>");
@@ -153,19 +151,19 @@ switch ($command) {
       $messages[] = "<form method=\"post\" action=\"setup.php\"><button>{$langSetup["restartbutton"]}</button></form>";
       break;
     }
-    if (!$config->isFileLoaded()) {
+    if (!uConfig::isFileLoaded()) {
       $messages[] = $langSetup["createconfig"];
       $messages[] = $langSetup["dorestart"];
       $messages[] = "<form method=\"post\" action=\"setup.php\"><button>{$langSetup["restartbutton"]}</button></form>";
       break;
     }
-    if (empty($config::$dbname) || empty($config::$dbhost) || empty($config::$dbuser)) {
+    if (empty(uConfig::$dbname) || empty(uConfig::$dbhost) || empty(uConfig::$dbuser)) {
       $messages[] = sprintf($langSetup["nodbsettings"], "\$dbname, \$dbhost, \$dbuser, \$dbpass");
       $messages[] = $langSetup["dorestart"];
       $messages[] = "<form method=\"post\" action=\"setup.php\"><button>{$langSetup["restartbutton"]}</button></form>";
       break;
     }
-    $messages[] = sprintf($langSetup["scriptdesc"], "'$tPositions', '$tTracks', '$tUsers'", "<b>{$config::$dbname}</b>");
+    $messages[] = sprintf($langSetup["scriptdesc"], "'$tPositions', '$tTracks', '$tUsers'", "<b>" . uConfig::$dbname . "</b>");
     $messages[] = $langSetup["scriptdesc2"];
     $messages[] = "<form method=\"post\" action=\"setup.php\"><input type=\"hidden\" name=\"command\" value=\"setup\"><button>{$langSetup["startbutton"]}</button></form>";
     break;
@@ -211,7 +209,7 @@ switch ($command) {
     </style>
     <script type="text/javascript">
       var lang = <?= json_encode($lang) ?>;
-      var pass_regex = <?= $config->passRegex() ?>;
+      var pass_regex = <?= uConfig::passRegex() ?>;
 
       function validateForm() {
         var form = document.getElementById('userForm');
diff --git a/utils/download.php b/utils/download.php
index 43be4ad..34e022f 100755
--- a/utils/download.php
+++ b/utils/download.php
@@ -17,7 +17,7 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-require_once(dirname(__DIR__) . "/auth.php"); // sets $user, $config
+require_once(dirname(__DIR__) . "/auth.php"); // sets $user
 require_once(ROOT_DIR . "/helpers/position.php");
 
 /**
@@ -57,12 +57,12 @@ $type = isset($_REQUEST["type"]) ? $_REQUEST["type"] : "kml";
 $userId = (isset($_REQUEST["userid"]) && is_numeric($_REQUEST["userid"])) ? (int) $_REQUEST["userid"] : NULL;
 $trackId = (isset($_REQUEST["trackid"]) && is_numeric($_REQUEST["trackid"])) ? (int) $_REQUEST["trackid"] : NULL;
 
-if (!$config::$public_tracks && !$user->isAdmin && $user->id !== $userId) {
+if (!uConfig::$public_tracks && !$user->isAdmin && $user->id !== $userId) {
   // unauthorized
   exit();
 }
 
-if ($config::$units == "imperial") {
+if (uConfig::$units == "imperial") {
   $factor_kmh = 0.62; //to mph
   $unit_kmh = "mph";
   $factor_m = 3.28; // to feet
diff --git a/utils/getpositions.php b/utils/getpositions.php
index 47875e9..b1e95a7 100755
--- a/utils/getpositions.php
+++ b/utils/getpositions.php
@@ -17,7 +17,7 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-require_once(dirname(__DIR__) . "/auth.php"); // sets $user, $config
+require_once(dirname(__DIR__) . "/auth.php"); // sets $user
 require_once(ROOT_DIR . "/helpers/position.php");
 
 $userId = (isset($_REQUEST["userid"]) && is_numeric($_REQUEST["userid"])) ? (int) $_REQUEST["userid"] : NULL;
@@ -26,7 +26,7 @@ $trackId = (isset($_REQUEST["trackid"]) && is_numeric($_REQUEST["trackid"])) ? (
 if ($userId) {
   $positionsArr = [];
 
-  if ($config::$public_tracks || $user->isAdmin || $user->id === $userId) {
+  if (uConfig::$public_tracks || $user->isAdmin || $user->id === $userId) {
     $position = new uPosition();
     if ($trackId) {
       // get all track data
diff --git a/utils/gettracks.php b/utils/gettracks.php
index fb1c902..3f15bd1 100755
--- a/utils/gettracks.php
+++ b/utils/gettracks.php
@@ -17,7 +17,7 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-require_once(dirname(__DIR__) . "/auth.php"); // sets $user, $config
+require_once(dirname(__DIR__) . "/auth.php"); // sets $user
 require_once(ROOT_DIR . "/helpers/track.php");
 
 $userId = (isset($_REQUEST["userid"]) && is_numeric($_REQUEST["userid"])) ? (int) $_REQUEST["userid"] : NULL;
@@ -25,7 +25,7 @@ $userId = (isset($_REQUEST["userid"]) && is_numeric($_REQUEST["userid"])) ? (int
 if ($userId) {
   $tracksArr = [];
 
-  if ($config::$public_tracks || $user->isAdmin || $user->id === $userId) {
+  if (uConfig::$public_tracks || $user->isAdmin || $user->id === $userId) {
     $track = new uTrack();
     $tracksArr = $track->getAll($userId);
   }