diff --git a/lib/Qrcode/Decoder/DecodedBitStreamParser.php b/lib/Qrcode/Decoder/DecodedBitStreamParser.php
index 147361b..ae211cd 100644
--- a/lib/Qrcode/Decoder/DecodedBitStreamParser.php
+++ b/lib/Qrcode/Decoder/DecodedBitStreamParser.php
@@ -309,24 +309,27 @@ private static function decodeByteSegment(
 			$readBytes[$i] = $bits->readBits(8); //(byte)
 		}
 		$text = implode(array_map('chr', $readBytes));
-		$encoding = '';
-		if ($currentCharacterSetECI == null) {
-			// The spec isn't clear on this mode; see
-			// section 6.4.5: t does not say which encoding to assuming
-			// upon decoding. I have seen ISO-8859-1 used as well as
-			// Shift_JIS -- without anything like an ECI designator to
-			// give a hint.
+        if ($hints !== null && array_key_exists('BINARY_MODE', $hints) && $hints['BINARY_MODE']) {
+            $result .= $text;
+        } else {
+            $encoding = '';
+            if ($currentCharacterSetECI == null) {
+                // The spec isn't clear on this mode; see
+                // section 6.4.5: t does not say which encoding to assuming
+                // upon decoding. I have seen ISO-8859-1 used as well as
+                // Shift_JIS -- without anything like an ECI designator to
+                // give a hint.
 
-			try {
-				$encoding = mb_detect_encoding($text, $hints);
-			} catch (ValueError $e) {
-				$encoding = mb_detect_encoding($text, mb_detect_order(), false);
-			}
-		} else {
-			$encoding = $currentCharacterSetECI->name();
-		}
-		$result .= mb_convert_encoding($text, $encoding); //(new String(readBytes, encoding));
-		// $result .= $text; //(new String(readBytes, encoding));
+                try {
+                    $encoding = mb_detect_encoding($text, $hints);
+                } catch (ValueError $e) {
+                    $encoding = mb_detect_encoding($text, mb_detect_order(), false);
+                }
+            } else {
+                $encoding = $currentCharacterSetECI->name();
+            }
+            $result .= mb_convert_encoding($text, $encoding); //(new String(readBytes, encoding));
+        }
 
 		$byteSegments = array_merge($byteSegments, $readBytes);
 	}
diff --git a/lib/Qrcode/Decoder/Decoder.php b/lib/Qrcode/Decoder/Decoder.php
index c88279e..c6b0f89 100644
--- a/lib/Qrcode/Decoder/Decoder.php
+++ b/lib/Qrcode/Decoder/Decoder.php
@@ -147,7 +147,7 @@ public function decodeBits(\Zxing\Common\BitMatrix $bits, $hints = null): string
 		}
 	}
 
-	private function decodeParser(\Zxing\Qrcode\Decoder\BitMatrixParser $parser, array $hints = null): DecoderResult
+	private function decodeParser(\Zxing\Qrcode\Decoder\BitMatrixParser $parser, ?array $hints = null): DecoderResult
 	{
 		$version = $parser->readVersion();
 		$ecLevel = $parser->readFormatInformation()->getErrorCorrectionLevel();
diff --git a/lib/Qrcode/Detector/Detector.php b/lib/Qrcode/Detector/Detector.php
index f3dac17..9bd4734 100644
--- a/lib/Qrcode/Detector/Detector.php
+++ b/lib/Qrcode/Detector/Detector.php
@@ -52,7 +52,7 @@ public function __construct(private BitMatrix $image)
 	 * @throws NotFoundException if QR Code cannot be found
 	 * @throws FormatException if a QR Code cannot be decoded
 	 */
-	final public function detect(array $hints = null): DetectorResult
+	final public function detect(?array $hints = null): DetectorResult
 	{/*Map<DecodeHintType,?>*/
 
 		$resultPointCallback = ($hints !== null && array_key_exists('NEED_RESULT_POINT_CALLBACK', $hints)) ?
diff --git a/tests/QrReaderTest.php b/tests/QrReaderTest.php
index 68dd7b7..4368a86 100644
--- a/tests/QrReaderTest.php
+++ b/tests/QrReaderTest.php
@@ -55,6 +55,36 @@ public function testText3()
 		$this->assertSame("https://www.gosuslugi.ru/covid-cert/verify/9770000014233333?lang=ru&ck=733a9d218d312fe134f1c2cc06e1a800", $qrcode->text());
 	}
 
+    /**
+     * The following test is meant to check if it works with QRCodes containing raw binary data.
+     * The test qrcode image was generated with `qrencode -8 -r 'binary-test.bin' -o 'test-binary-test.png'`.
+     *
+     * @return void
+     */
+    public function testBinary() {
+        $image = __DIR__ . "/qrcodes/binary-test.png";
+        $expected = hex2bin(
+                '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f'.
+                '202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f'.
+                '404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f'.
+                '606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f'.
+                '808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f'.
+                'a0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebf'.
+                'c0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedf'.
+                'e0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'
+        );
+
+        $qrcode = new QrReader($image);
+        $qrcode->decode([
+            'BINARY_MODE' => true
+        ]);
+        $this->assertSame(null, $qrcode->getError());
+        $result = $qrcode->getResult();
+        $this->assertInstanceOf(Result::class, $result);
+        $text = $result->getText();
+        $this->assertEquals($expected, $text);
+    }
+
 	// TODO: fix this test
 	// public function testText4()
 	// {
diff --git a/tests/qrcodes/binary-test.png b/tests/qrcodes/binary-test.png
new file mode 100644
index 0000000..b2fc3b6
Binary files /dev/null and b/tests/qrcodes/binary-test.png differ