diff --git a/README.md b/README.md
index 10819b6..01c8222 100644
--- a/README.md
+++ b/README.md
@@ -83,12 +83,6 @@ echo stringify(['foo' => true, 'bar' => 42, 'baz' => ['qux' => INF, 'quux' => nu
 echo stringify(tmpfile()) . PHP_EOL;
 // `resource <stream>`
 
-echo stringify(BasicEnumeration::FOO) . PHP_EOL;
-// `BasicEnumeration::FOO`
-
-echo stringify(BackedEnumeration::QUX) . PHP_EOL;
-// `BackedEnumeration::QUX`
-
 echo stringify(new WithProperties()) . PHP_EOL;
 // `WithProperties { +$publicProperty=true #$protectedProperty=42 -$privateProperty="something" }`
 
@@ -136,9 +130,6 @@ echo stringify(new RuntimeException()) . PHP_EOL;
 
 echo stringify(new InvalidArgumentException('This is the exception message')) . PHP_EOL;
 // `InvalidArgumentException { "This is the exception message" in file.php:112 }`
-
-echo stringify(Traversable::class) . PHP_EOL;
-// `Traversable`
 ```
 
 To see more examples of how to use the library check the [integration tests](tests/integration).
diff --git a/src/Handlers/CompositeHandler.php b/src/Handlers/CompositeHandler.php
index f0ef261..6b7f21e 100644
--- a/src/Handlers/CompositeHandler.php
+++ b/src/Handlers/CompositeHandler.php
@@ -41,7 +41,6 @@ public static function create(): self
             new ResourceHandler($quoter),
             new BoolHandler($quoter),
             new NullHandler($quoter),
-            new DeclaredHandler($quoter),
             $jsonEncodableHandler = new JsonEncodableHandler(),
         );
         $handler->prependHandler(
diff --git a/src/Handlers/DeclaredHandler.php b/src/Handlers/DeclaredHandler.php
deleted file mode 100644
index d88720d..0000000
--- a/src/Handlers/DeclaredHandler.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-/*
- * This file is part of Respect/Stringifier.
- * Copyright (c) Henrique Moody <henriquemoody@gmail.com>
- * SPDX-License-Identifier: MIT
- */
-
-declare(strict_types=1);
-
-namespace Respect\Stringifier\Handlers;
-
-use Respect\Stringifier\Handler;
-use Respect\Stringifier\Quoter;
-
-use function class_exists;
-use function enum_exists;
-use function interface_exists;
-use function is_string;
-use function trait_exists;
-
-final class DeclaredHandler implements Handler
-{
-    public function __construct(
-        private readonly Quoter $quoter,
-    ) {
-    }
-
-    public function handle(mixed $raw, int $depth): string|null
-    {
-        if (!is_string($raw) || $this->isNotDeclared($raw)) {
-            return null;
-        }
-
-        return $this->quoter->quote($raw, $depth);
-    }
-
-    public function isNotDeclared(string $raw): bool
-    {
-        return !class_exists($raw) && !interface_exists($raw) && !trait_exists($raw) && !enum_exists($raw);
-    }
-}
diff --git a/tests/integration/stringify-declared.phpt b/tests/integration/stringify-declared.phpt
deleted file mode 100644
index ce511ce..0000000
--- a/tests/integration/stringify-declared.phpt
+++ /dev/null
@@ -1,21 +0,0 @@
---FILE--
-<?php
-
-declare(strict_types=1);
-
-require 'vendor/autoload.php';
-
-use Respect\Stringifier\Helpers\ObjectHelper;
-
-outputMultiple(
-    Traversable::class,
-    ArrayIterator::class,
-    BasicEnumeration::class,
-    ObjectHelper::class,
-);
-?>
---EXPECT--
-`Traversable`
-`ArrayIterator`
-`BasicEnumeration`
-`Respect\Stringifier\Helpers\ObjectHelper`
diff --git a/tests/unit/Handlers/DeclaredHandlerTest.php b/tests/unit/Handlers/DeclaredHandlerTest.php
deleted file mode 100644
index d39f24e..0000000
--- a/tests/unit/Handlers/DeclaredHandlerTest.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-/*
- * This file is part of Respect/Stringifier.
- * Copyright (c) Henrique Moody <henriquemoody@gmail.com>
- * SPDX-License-Identifier: MIT
- */
-
-declare(strict_types=1);
-
-namespace Respect\Stringifier\Test\Unit\Handlers;
-
-use ArrayObject;
-use BasicEnumeration;
-use Countable;
-use PHPUnit\Framework\Attributes\CoversClass;
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\Attributes\Test;
-use PHPUnit\Framework\TestCase;
-use Respect\Stringifier\Handlers\DeclaredHandler;
-use Respect\Stringifier\Helpers\ObjectHelper;
-use Respect\Stringifier\Test\Double\FakeQuoter;
-
-#[CoversClass(DeclaredHandler::class)]
-final class DeclaredHandlerTest extends TestCase
-{
-    private const int DEPTH = 0;
-
-    #[Test]
-    public function itShouldNotStringifyWhenRawValueIsNotExists(): void
-    {
-        $sut = new DeclaredHandler(new FakeQuoter());
-
-        self::assertNull($sut->handle('NotAClassInterfaceTraitOrEnum', self::DEPTH));
-    }
-
-    #[Test]
-    #[DataProvider('existsRawValuesProvider')]
-    public function itShouldStringifyWhenRawValueIsExists(string $raw): void
-    {
-        $quoter = new FakeQuoter();
-
-        $sut = new DeclaredHandler($quoter);
-
-        $actual = $sut->handle($raw, self::DEPTH);
-        $expected = $quoter->quote($raw, self::DEPTH);
-
-        self::assertEquals($expected, $actual);
-    }
-
-    /** @return array<int, array<int, string>> */
-    public static function existsRawValuesProvider(): array
-    {
-        return [
-            [ArrayObject::class],
-            [Countable::class],
-            [BasicEnumeration::class],
-            [ObjectHelper::class],
-        ];
-    }
-}