diff --git a/src/ByteStream.php b/src/ByteStream.php
index 6190978..daf7908 100644
--- a/src/ByteStream.php
+++ b/src/ByteStream.php
@@ -6,9 +6,9 @@
 use Kryus\Binary\DataType\BinaryValue;
 use Kryus\Binary\DataType\Byte;
 use Kryus\Binary\DataType\Dword;
-use Kryus\Binary\DataType\SignedByte;
-use Kryus\Binary\DataType\SignedDword;
-use Kryus\Binary\DataType\SignedWord;
+use Kryus\Binary\DataType\UnsignedByte;
+use Kryus\Binary\DataType\UnsignedDword;
+use Kryus\Binary\DataType\UnsignedWord;
 use Kryus\Binary\DataType\Word;
 
 class ByteStream
@@ -143,10 +143,10 @@ public function readByte(?int $endianness = null): Byte
 
     /**
      * @param int|null $endianness
-     * @return SignedByte
+     * @return UnsignedByte
      * @throws \Exception
      */
-    public function readSignedByte(?int $endianness = null): SignedByte
+    public function readUnsignedByte(?int $endianness = null): UnsignedByte
     {
         if (!in_array($endianness, [null, BinaryValue::ENDIANNESS_LITTLE_ENDIAN, BinaryValue::ENDIANNESS_BIG_ENDIAN], true)) {
             throw new \Exception('Invalid endianness type.');
@@ -154,7 +154,7 @@ public function readSignedByte(?int $endianness = null): SignedByte
 
         $binaryValue = $this->readBytes(1);
 
-        return new SignedByte($binaryValue, $endianness ?? $this->endianness);
+        return new UnsignedByte($binaryValue, $endianness ?? $this->endianness);
     }
 
     /**
@@ -175,10 +175,10 @@ public function readWord(?int $endianness = null): Word
 
     /**
      * @param int|null $endianness
-     * @return SignedWord
+     * @return UnsignedWord
      * @throws \Exception
      */
-    public function readSignedWord(?int $endianness = null): SignedWord
+    public function readUnsignedWord(?int $endianness = null): UnsignedWord
     {
         if (!in_array($endianness, [null, BinaryValue::ENDIANNESS_LITTLE_ENDIAN, BinaryValue::ENDIANNESS_BIG_ENDIAN], true)) {
             throw new \Exception('Invalid endianness type.');
@@ -186,7 +186,7 @@ public function readSignedWord(?int $endianness = null): SignedWord
 
         $binaryValue = $this->readBytes(2);
 
-        return new SignedWord($binaryValue, $endianness ?? $this->endianness);
+        return new UnsignedWord($binaryValue, $endianness ?? $this->endianness);
     }
 
     /**
@@ -207,10 +207,10 @@ public function readDword(?int $endianness = null): Dword
 
     /**
      * @param int|null $endianness
-     * @return SignedDword
+     * @return UnsignedDword
      * @throws \Exception
      */
-    public function readSignedDword(?int $endianness = null): SignedDword
+    public function readUnsignedDword(?int $endianness = null): UnsignedDword
     {
         if (!in_array($endianness, [null, BinaryValue::ENDIANNESS_LITTLE_ENDIAN, BinaryValue::ENDIANNESS_BIG_ENDIAN], true)) {
             throw new \Exception('Invalid endianness type.');
@@ -218,6 +218,6 @@ public function readSignedDword(?int $endianness = null): SignedDword
 
         $binaryValue = $this->readBytes(4);
 
-        return new SignedDword($binaryValue, $endianness ?? $this->endianness);
+        return new UnsignedDword($binaryValue, $endianness ?? $this->endianness);
     }
 }
diff --git a/src/DataType/BinaryValue.php b/src/DataType/BinaryValue.php
index 01c6eb7..4488f55 100644
--- a/src/DataType/BinaryValue.php
+++ b/src/DataType/BinaryValue.php
@@ -23,7 +23,7 @@ class BinaryValue
      * @param bool $signed
      * @throws \Exception
      */
-    public function __construct(string $value, int $endianness = self::ENDIANNESS_LITTLE_ENDIAN, bool $signed = false)
+    public function __construct(string $value, int $endianness = self::ENDIANNESS_LITTLE_ENDIAN, bool $signed = true)
     {
         if (!in_array($endianness, [self::ENDIANNESS_LITTLE_ENDIAN, self::ENDIANNESS_BIG_ENDIAN], true)) {
             throw new \Exception('Invalid endianness type.');
diff --git a/src/DataType/SignedByte.php b/src/DataType/UnsignedByte.php
similarity index 75%
rename from src/DataType/SignedByte.php
rename to src/DataType/UnsignedByte.php
index 45d62ec..a77ddf5 100644
--- a/src/DataType/SignedByte.php
+++ b/src/DataType/UnsignedByte.php
@@ -3,7 +3,7 @@
 
 namespace Kryus\Binary\DataType;
 
-class SignedByte extends BinaryValue
+class UnsignedByte extends BinaryValue
 {
     /**
      * @param string $value
@@ -14,9 +14,9 @@ public function __construct(string $value, int $endianness = BinaryValue::ENDIAN
     {
         $byteCount = strlen($value);
         if ($byteCount !== 1) {
-            throw new \Exception("Invalid byte count of {$byteCount} for value of type Signed Byte.");
+            throw new \Exception("Invalid byte count of {$byteCount} for value of type Unsigned Byte.");
         }
 
-        parent::__construct($value, $endianness, true);
+        parent::__construct($value, $endianness, false);
     }
 }
\ No newline at end of file
diff --git a/src/DataType/SignedDword.php b/src/DataType/UnsignedDword.php
similarity index 75%
rename from src/DataType/SignedDword.php
rename to src/DataType/UnsignedDword.php
index d393ca8..27cfc3b 100644
--- a/src/DataType/SignedDword.php
+++ b/src/DataType/UnsignedDword.php
@@ -3,7 +3,7 @@
 
 namespace Kryus\Binary\DataType;
 
-class SignedDword extends BinaryValue
+class UnsignedDword extends BinaryValue
 {
     /**
      * @param string $value
@@ -14,9 +14,9 @@ public function __construct(string $value, int $endianness = BinaryValue::ENDIAN
     {
         $byteCount = strlen($value);
         if ($byteCount !== 4) {
-            throw new \Exception("Invalid byte count of {$byteCount} for value of type Signed Dword.");
+            throw new \Exception("Invalid byte count of {$byteCount} for value of type Unsigned Dword.");
         }
 
-        parent::__construct($value, $endianness, true);
+        parent::__construct($value, $endianness, false);
     }
 }
\ No newline at end of file
diff --git a/src/DataType/SignedWord.php b/src/DataType/UnsignedWord.php
similarity index 75%
rename from src/DataType/SignedWord.php
rename to src/DataType/UnsignedWord.php
index b2fc58d..60ba89d 100644
--- a/src/DataType/SignedWord.php
+++ b/src/DataType/UnsignedWord.php
@@ -3,7 +3,7 @@
 
 namespace Kryus\Binary\DataType;
 
-class SignedWord extends BinaryValue
+class UnsignedWord extends BinaryValue
 {
     /**
      * @param string $value
@@ -14,9 +14,9 @@ public function __construct(string $value, int $endianness = BinaryValue::ENDIAN
     {
         $byteCount = strlen($value);
         if ($byteCount !== 2) {
-            throw new \Exception("Invalid byte count of {$byteCount} for value of type Signed Word.");
+            throw new \Exception("Invalid byte count of {$byteCount} for value of type Unsigned Word.");
         }
 
-        parent::__construct($value, $endianness, true);
+        parent::__construct($value, $endianness, false);
     }
 }
\ No newline at end of file