diff --git a/src/Streams/ResourceStream.php b/src/Streams/ResourceStream.php
index d8c143c..5139fc2 100644
--- a/src/Streams/ResourceStream.php
+++ b/src/Streams/ResourceStream.php
@@ -38,10 +38,10 @@ class ResourceStream implements StreamInterface
     }
 
     /**
-     * @param   int $length
-     * @return  string
-     * @throws  \RouterOS\Exceptions\StreamException
-     * @throws  \InvalidArgumentException
+     * @inheritDoc
+     *
+     * @throws \RouterOS\Exceptions\StreamException when length parameter is invalid
+     * @throws \InvalidArgumentException when the stream have been totally read and read method is called again
      */
     public function read(int $length): string
     {
@@ -60,17 +60,9 @@ class ResourceStream implements StreamInterface
     }
 
     /**
-     * Writes a string to a stream
-     *
-     * Write $length bytes of string, if not mentioned, write all the string
-     * Must be binary safe (as fread).
-     * if $length is greater than string length, write all string and return number of writen bytes
-     * if $length os smaller than string length, remaining bytes are losts.
+     * @inheritDoc
      *
-     * @param   string   $string
-     * @param   int|null $length the numer of bytes to read
-     * @return  int the number of written bytes
-     * @throws  \RouterOS\Exceptions\StreamException
+     * @throws \RouterOS\Exceptions\StreamException when not possible to write bytes
      */
     public function write(string $string, int $length = null): int
     {
@@ -89,12 +81,11 @@ class ResourceStream implements StreamInterface
     }
 
     /**
-     * Close stream connection
+     * @inheritDoc
      *
-     * @return  void
-     * @throws  \RouterOS\Exceptions\StreamException
+     * @throws \RouterOS\Exceptions\StreamException when not possible to close the stream
      */
-    public function close()
+    public function close(): void
     {
         $hasBeenClosed = false;
 
diff --git a/src/Streams/StringStream.php b/src/Streams/StringStream.php
index e845f32..a1af80e 100644
--- a/src/Streams/StringStream.php
+++ b/src/Streams/StringStream.php
@@ -2,6 +2,7 @@
 
 namespace RouterOS\Streams;
 
+use InvalidArgumentException;
 use RouterOS\Interfaces\StreamInterface;
 use RouterOS\Exceptions\StreamException;
 
@@ -31,18 +32,18 @@ class StringStream implements StreamInterface
         $this->buffer = $string;
     }
 
+
     /**
-     * {@inheritDoc}
+     * @inheritDoc
      *
-     * @throws \InvalidArgumentException when length parameter is invalid
-     * @throws StreamException when the stream have been tatly red and read methd is called again
+     * @throws \RouterOS\Exceptions\StreamException
      */
     public function read(int $length): string
     {
         $remaining = strlen($this->buffer);
 
         if ($length < 0) {
-            throw new \InvalidArgumentException('Cannot read a negative count of bytes from a stream');
+            throw new InvalidArgumentException('Cannot read a negative count of bytes from a stream');
         }
 
         if (0 === $remaining) {
@@ -65,12 +66,9 @@ class StringStream implements StreamInterface
     }
 
     /**
-     * Fake write method, do nothing except return the "writen" length
+     * @inheritDoc
      *
-     * @param   string   $string The string to write
-     * @param   int|null $length the number of characters to write
-     * @return  int number of "writen" bytes
-     * @throws  \InvalidArgumentException on invalid length
+     * @throws \InvalidArgumentException on invalid length
      */
     public function write(string $string, int $length = null): int
     {
@@ -79,18 +77,16 @@ class StringStream implements StreamInterface
         }
 
         if ($length < 0) {
-            throw new \InvalidArgumentException('Cannot write a negative count of bytes');
+            throw new InvalidArgumentException('Cannot write a negative count of bytes');
         }
 
         return min($length, strlen($string));
     }
 
     /**
-     * Close stream connection
-     *
-     * @return  void
+     * @inheritDoc
      */
-    public function close()
+    public function close(): void
     {
         $this->buffer = '';
     }