diff --git a/MD_STD.php b/MD_STD.php
index 5776ecb..9a2f2a0 100644
--- a/MD_STD.php
+++ b/MD_STD.php
@@ -298,7 +298,7 @@ final class MD_STD {
 
         }
 
-        $running = NULL;
+        $running = null;
         do {
             usleep(10000);
             curl_multi_exec($mh, $running);
@@ -371,7 +371,8 @@ final class MD_STD {
             if (isset($matches[2])) {
                 // die Qualität benutzen
                 $lang_quality = (float)$matches[2];
-            } else {
+            }
+            else {
                 // Kompabilitätsmodus: Qualität 1 annehmen
                 $lang_quality = 1.0;
             }
diff --git a/MD_STD_CACHE.php b/MD_STD_CACHE.php
index 9cde874..097c0e7 100644
--- a/MD_STD_CACHE.php
+++ b/MD_STD_CACHE.php
@@ -30,7 +30,7 @@ final class MD_STD_CACHE {
         echo $outputT;
 
         $redis = new Redis();
-        $redis->connect(self::$redis_host, self::$redis_port, 1, NULL, 0, 0, ['auth' => [MD_CONF::$redis_pw]]);
+        $redis->connect(self::$redis_host, self::$redis_port, 1, null, 0, 0, ['auth' => [MD_CONF::$redis_pw]]);
         $redis->set($redisKey, $outputT);
         $redis->expire($redisKey, $expiry);
         $redis->close();
@@ -51,7 +51,7 @@ final class MD_STD_CACHE {
         if (PHP_SAPI === 'cli') return '';
 
         $redis = new Redis();
-        $redis->connect(self::$redis_host, self::$redis_port, 1, NULL, 0, 0, ['auth' => [MD_CONF::$redis_pw]]);
+        $redis->connect(self::$redis_host, self::$redis_port, 1, null, 0, 0, ['auth' => [MD_CONF::$redis_pw]]);
         if ($redis->ping() !== false) {
 
             ob_start();
diff --git a/MD_STD_IN.php b/MD_STD_IN.php
index 97aaaa7..fb0102a 100644
--- a/MD_STD_IN.php
+++ b/MD_STD_IN.php
@@ -129,7 +129,7 @@ final class MD_STD_IN {
         else $output = self::sanitize_text($default);
 
         if (!empty($allowed) and !\in_array($output, $allowed, true)) {
-            Throw new MDpageParameterNotFromListException("Parameter `{$var_name}` must be any of the allowed values: '" . implode('\', \'', $allowed) . "'");
+            throw new MDpageParameterNotFromListException("Parameter `{$var_name}` must be any of the allowed values: '" . implode('\', \'', $allowed) . "'");
         }
 
         return $output;
@@ -154,7 +154,7 @@ final class MD_STD_IN {
         else $output = self::sanitize_text($default);
 
         if (!empty($allowed) and !\in_array($output, $allowed, true)) {
-            Throw new MDpageParameterNotFromListException("Parameter `{$var_name}` must be any of the allowed values: '" . implode('\', \'', $allowed) . "'");
+            throw new MDpageParameterNotFromListException("Parameter `{$var_name}` must be any of the allowed values: '" . implode('\', \'', $allowed) . "'");
         }
 
         return $output;