diff --git a/Datatypes/Enum.php b/Datatypes/Enum.php
index 2df44d0f2..7b542d7bd 100644
--- a/Datatypes/Enum.php
+++ b/Datatypes/Enum.php
@@ -96,7 +96,7 @@ abstract class Enum
     {
         $constants = self::getConstants();
 
-        return $this->constants[mt_rand(0, count($constants))];
+        return $constants[mt_rand(0, count($constants))];
     }
 
 }
diff --git a/Module/ModuleManager.php b/Module/ModuleManager.php
index 93ceff9b5..61710643d 100644
--- a/Module/ModuleManager.php
+++ b/Module/ModuleManager.php
@@ -49,7 +49,7 @@ class ModuleManager
     /**
      * All modules that are running on this uri.
      *
-     * @var \phpOMS\Module\ModuleAbstract
+     * @var \phpOMS\Module\ModuleAbstract[]
      * @since 1.0.0
      */
     private $running = [];
diff --git a/Stdlib/PriorityQueue.php b/Stdlib/PriorityQueue.php
index 8034ae597..fa829c33d 100644
--- a/Stdlib/PriorityQueue.php
+++ b/Stdlib/PriorityQueue.php
@@ -197,7 +197,7 @@ class PriorityQueue implements \Countable, \Serializable
     /**
      * {@inheritdoc}
      */
-    public function unserialize(array $data) : array
+    public function unserialize($data) : array
     {
         $this->queue = json_decode($data);
         $this->count = count($this->queue);
diff --git a/System/File/Directory.php b/System/File/Directory.php
index 673fb4631..a09d62e50 100644
--- a/System/File/Directory.php
+++ b/System/File/Directory.php
@@ -73,7 +73,7 @@ class Directory extends FileAbstract implements \Iterator, \ArrayAccess
 
     public function get(string $name) : FileAbstract 
     {
-        return $this->node[$name] ?? new NullFile();
+        return $this->nodes[$name] ?? new NullFile();
     }
 
     public function add(FileAbstract $file) 
diff --git a/System/File/FileAbstract.php b/System/File/FileAbstract.php
index 0206e10e5..75a9433b6 100644
--- a/System/File/FileAbstract.php
+++ b/System/File/FileAbstract.php
@@ -30,10 +30,10 @@ namespace phpOMS\System\File;
  */
 abstract class FileAbstract
 {
-    private $path = '';
-    private $name = 'new_directory';
-    private $count = 0;
-    private $size = 0;
+    protected $path = '';
+    protected $name = 'new_directory';
+    protected $count = 0;
+    protected $size = 0;
     private $createdAt = null;
     private $changedAt = null;
     private $owner = 0;
diff --git a/Uri/Http.php b/Uri/Http.php
index ef0d2310d..57bcbd7ba 100644
--- a/Uri/Http.php
+++ b/Uri/Http.php
@@ -332,7 +332,7 @@ class Http implements UriInterface
      */
     public function getAuthority() : string
     {
-        return ($this->getUser() !== '' ? $this->getUser() . '@' : '') . $this->host . (isset($this->port) && $this->port !== '' ? ':' . $this->port : '');
+        return ($this->getUser() !== '' ? $this->getUser() . '@' : '') . $this->host . (isset($this->port) && $this->port !== 0 ? ':' . $this->port : '');
     }
 
     /**
diff --git a/Utils/MultiMap.php b/Utils/MultiMap.php
index 5f3303169..b159b6393 100644
--- a/Utils/MultiMap.php
+++ b/Utils/MultiMap.php
@@ -261,13 +261,13 @@ class MultiMap implements \Countable
         if($this->orderType !== OrderType::LOOSE) {
             $permutation = Permutation::permut($key);
 
-            foreach($permuation as $permut) {
+            foreach($permutation as $permut) {
                 if($this->set(implode($permut, ':'), $value)) {
                     return true;
                 }
             }
         } else {
-            return $this->set(implode($key, ':'));
+            return $this->set(implode($key, ':'), $value);
         }
 
         return false;
diff --git a/Utils/RnG/ArrayRandomize.php b/Utils/RnG/ArrayRandomize.php
index d8bcabbfb..cad51922e 100644
--- a/Utils/RnG/ArrayRandomize.php
+++ b/Utils/RnG/ArrayRandomize.php
@@ -65,7 +65,7 @@ class ArrayRandomize
         for($i = count($arr)-1; $i > 0; $i--){
             $rnd = mt_rand(0, $i);
             $shuffled[$i] = $arr[$rnd];
-            $shuffled[$rand] = $arr[$i];
+            $shuffled[$rnd] = $arr[$i];
         }
 
         return $shuffled;