diff --git a/src/Autocomplete/composer.json b/src/Autocomplete/composer.json
index 94b94e39918..8698cd4d7d5 100644
--- a/src/Autocomplete/composer.json
+++ b/src/Autocomplete/composer.json
@@ -29,8 +29,7 @@
         "symfony/deprecation-contracts": "^2.5|^3",
         "symfony/http-foundation": "^6.3|^7.0",
         "symfony/http-kernel": "^6.3|^7.0",
-        "symfony/property-access": "^6.3|^7.0",
-        "symfony/string": "^6.3|^7.0"
+        "symfony/property-access": "^6.3|^7.0"
     },
     "require-dev": {
         "doctrine/collections": "^1.6.8|^2.0",
diff --git a/src/Autocomplete/src/Form/AsEntityAutocompleteField.php b/src/Autocomplete/src/Form/AsEntityAutocompleteField.php
index d707c4b71b5..94119fba8b8 100644
--- a/src/Autocomplete/src/Form/AsEntityAutocompleteField.php
+++ b/src/Autocomplete/src/Form/AsEntityAutocompleteField.php
@@ -11,8 +11,6 @@
 
 namespace Symfony\UX\Autocomplete\Form;
 
-use Symfony\Component\String\UnicodeString;
-
 /**
  * All form types that want to expose autocomplete functionality should have this.
  *
@@ -37,13 +35,25 @@ public function getRoute(): string
         return $this->route;
     }
 
+    /**
+     * @internal
+     *
+     * @param class-string $class
+     */
     public static function shortName(string $class): string
     {
-        $string = new UnicodeString($class);
+        if ($pos = (int) strrpos($class, '\\')) {
+            $class = substr($class, $pos + 1);
+        }
 
-        return $string->afterLast('\\')->snake()->toString();
+        return strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $class));
     }
 
+    /**
+     * @internal
+     *
+     * @param class-string $class
+     */
     public static function getInstance(string $class): ?self
     {
         $reflectionClass = new \ReflectionClass($class);
diff --git a/src/Autocomplete/tests/Unit/Form/AsEntityAutocompleteFieldTest.php b/src/Autocomplete/tests/Unit/Form/AsEntityAutocompleteFieldTest.php
new file mode 100644
index 00000000000..c7fabeafd7d
--- /dev/null
+++ b/src/Autocomplete/tests/Unit/Form/AsEntityAutocompleteFieldTest.php
@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\UX\Autocomplete\Tests\Unit\Form;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\UX\Autocomplete\Form\AsEntityAutocompleteField;
+use Symfony\UX\Autocomplete\Tests\Fixtures\Form\ProductType;
+
+class AsEntityAutocompleteFieldTest extends TestCase
+{
+    /**
+     * @dataProvider provideClassNames
+     */
+    public function testShortName(string $shortName, string $className): void
+    {
+        $this->assertEquals($shortName, AsEntityAutocompleteField::shortName($className));
+    }
+
+    /**
+     * @return iterable<{string, string}>
+     */
+    public static function provideClassNames(): iterable
+    {
+        yield from [
+            ['as_entity_autocomplete_field', AsEntityAutocompleteField::class],
+            ['product_type', ProductType::class],
+            ['bar', 'Bar'],
+            ['foo_bar', 'FooBar'],
+            ['foo_bar', 'Foo\FooBar'],
+            ['foo_bar', 'Foo\Bar\FooBar'],
+        ];
+    }
+}