diff --git a/boot.php b/boot.php
index e95cbc9d22..a9b4e4d293 100644
--- a/boot.php
+++ b/boot.php
@@ -19,6 +19,8 @@
 
 require_once('include/autoloader.php');
 
+use \Friendica\Core\Config;
+
 require_once('include/config.php');
 require_once('include/network.php');
 require_once('include/plugin.php');
@@ -1475,9 +1477,7 @@ function system_unavailable() {
 
 function clean_urls() {
 	$a = get_app();
-	//	if($a->config['system']['clean_urls'])
 	return true;
-	//	return false;
 }
 
 function z_path() {
@@ -2041,16 +2041,18 @@ function current_theme(){
 //		$is_mobile = $mobile_detect->isMobile() || $mobile_detect->isTablet();
 	$is_mobile = $a->is_mobile || $a->is_tablet;
 
-	$standard_system_theme = ((isset($a->config['system']['theme'])) ? $a->config['system']['theme'] : '');
+	$standard_system_theme = Config::get('system', 'theme', '');
 	$standard_theme_name = ((isset($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $standard_system_theme);
 
-	if($is_mobile) {
-		if(isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
+	if ($is_mobile) {
+		if (isset($_SESSION['show-mobile']) && !$_SESSION['show-mobile']) {
 			$system_theme = $standard_system_theme;
 			$theme_name = $standard_theme_name;
-		}
-		else {
-			$system_theme = ((isset($a->config['system']['mobile-theme'])) ? $a->config['system']['mobile-theme'] : $standard_system_theme);
+		} else {
+			$system_theme = Config::get('system', 'mobile-theme', '');
+			if ($system_theme == '') {
+				$system_theme = $standard_system_theme;
+			}
 			$theme_name = ((isset($_SESSION) && x($_SESSION,'mobile-theme')) ? $_SESSION['mobile-theme'] : $system_theme);
 
 			if($theme_name === '---') {
diff --git a/include/api.php b/include/api.php
index 64a896b554..ce76103129 100644
--- a/include/api.php
+++ b/include/api.php
@@ -5,6 +5,9 @@
  *
  * @todo Automatically detect if incoming data is HTML or BBCode
  */
+
+use \Friendica\Core\Config;
+
 	require_once('include/HTTPExceptions.php');
 
 	require_once('include/bbcode.php');
@@ -2696,11 +2699,11 @@
 		$logo = App::get_baseurl() . '/images/friendica-64.png';
 		$email = $a->config['admin_email'];
 		$closed = (($a->config['register_policy'] == REGISTER_CLOSED) ? 'true' : 'false');
-		$private = (($a->config['system']['block_public']) ? 'true' : 'false');
+		$private = ((Config::get('system', 'block_public')) ? 'true' : 'false');
 		$textlimit = (string) (($a->config['max_import_size']) ? $a->config['max_import_size'] : 200000);
 		if($a->config['api_import_size'])
 			$texlimit = string($a->config['api_import_size']);
-		$ssl = (($a->config['system']['have_ssl']) ? 'true' : 'false');
+		$ssl = ((Config::get('system', 'have_ssl')) ? 'true' : 'false');
 		$sslserver = (($ssl === 'true') ? str_replace('http:','https:',App::get_baseurl()) : '');
 
 		$config = array(
diff --git a/include/datetime.php b/include/datetime.php
index a17c405dc3..779c7a5aad 100644
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -4,6 +4,7 @@
  * @brief Some functions for date and time related tasks.
  */
 
+use \Friendica\Core\Config;
 
 /**
  * @brief Two-level sort for timezones.
@@ -271,8 +272,9 @@ function datetimesel($format, $min, $max, $default, $label, $id = 'datetimepicke
 	$lang = substr(get_browser_language(), 0, 2);
 
 	// Check if the detected language is supported by the picker
-	if (!in_array($lang, array("ar", "ro", "id", "bg", "fa", "ru", "uk", "en", "el", "de", "nl", "tr", "fr", "es", "th", "pl", "pt", "ch", "se", "kr", "it", "da", "no", "ja", "vi", "sl", "cs", "hu")))
-		$lang = ((isset($a->config['system']['language'])) ? $a->config['system']['language'] : 'en');
+	if (!in_array($lang, array("ar", "ro", "id", "bg", "fa", "ru", "uk", "en", "el", "de", "nl", "tr", "fr", "es", "th", "pl", "pt", "ch", "se", "kr", "it", "da", "no", "ja", "vi", "sl", "cs", "hu"))) {
+		$lang = Config::get('system', 'language', 'en');
+	}
 
 	$o = '';
 	$dateformat = '';
diff --git a/include/pgettext.php b/include/pgettext.php
index fb87798ff7..335869eda2 100644
--- a/include/pgettext.php
+++ b/include/pgettext.php
@@ -10,6 +10,8 @@
  *
  */
 
+use \Friendica\Core\Config;
+
 require_once("include/dba.php");
 
 if(! function_exists('get_browser_language')) {
@@ -47,12 +49,12 @@ function get_browser_language() {
 			break;
 		}
 	}
-	if(isset($preferred))
+	if (isset($preferred)) {
 		return $preferred;
+	}
 
 	// in case none matches, get the system wide configured language, or fall back to English
-    $a = get_app();
-	return ((isset($a->config['system']['language'])) ? $a->config['system']['language'] : 'en');
+	return Config::get('system', 'language', 'en');
 }}
 
 
diff --git a/mod/dfrn_confirm.php b/mod/dfrn_confirm.php
index 57ddc58f2c..e2ce806275 100644
--- a/mod/dfrn_confirm.php
+++ b/mod/dfrn_confirm.php
@@ -224,9 +224,7 @@ function dfrn_confirm_post(App $a, $handsfree = null) {
 			 *
 			 */
 
-			$a->config['system']['curl_timeout'] = 120;
-
-			$res = post_url($dfrn_confirm,$params);
+			$res = post_url($dfrn_confirm, $params, null, $redirects, 120);
 
 			logger(' Confirm: received data: ' . $res, LOGGER_DATA);