diff --git a/bridge/symfony-console/bin/testo b/bridge/symfony-console/bin/testo
index c1b6176e..f0f5f46c 100755
--- a/bridge/symfony-console/bin/testo
+++ b/bridge/symfony-console/bin/testo
@@ -23,7 +23,7 @@ use Testo\Common\Info;
 
     # As a dependency
     $s = DIRECTORY_SEPARATOR;
-    \str_ends_with(__DIR__, "{$s}vendor{$s}testo{$s}testo{$s}bin") and $paths[] = __DIR__ . '/../../../autoload.php';
+    \str_ends_with(__DIR__, "{$s}vendor{$s}testo{$s}bridge-symfony-console{$s}bin") and $paths[] = __DIR__ . '/../../../autoload.php';
 
     # Fallback to CWD
     $paths[] = 'vendor/autoload.php';
diff --git a/bridge/symfony-console/tests/Acceptance/EntrypointTest.php b/bridge/symfony-console/tests/Acceptance/EntrypointTest.php
new file mode 100644
index 00000000..e61b79e7
--- /dev/null
+++ b/bridge/symfony-console/tests/Acceptance/EntrypointTest.php
@@ -0,0 +1,147 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Bridge\SymfonyConsole\Acceptance;
+
+use Testo\Assert;
+use Testo\Codecov\CoversNothing;
+use Testo\Lifecycle\AfterTest;
+use Testo\Lifecycle\BeforeTest;
+use Testo\Test;
+use Tests\Bridge\SymfonyConsole\Testo\Sandbox;
+
+#[Test]
+#[CoversNothing]
+final class EntrypointTest
+{
+    private Sandbox $sandbox;
+
+    public function loadsTheProjectAutoloaderWhenInstalledAsComposerDependency(): void
+    {
+        $entrypoint = $this->installEntrypointAsComposerDependency();
+
+        [$exitCode, $stdout, $stderr] = self::runBinary($entrypoint, '--version', $this->sandbox->path('run'));
+
+        self::assertRuns($exitCode, $stdout, $stderr, 'the installed entrypoint must load vendor/autoload.php three levels above its bin directory');
+    }
+
+    public function loadsTheBridgeLocalAutoloaderDuringDevelopment(): void
+    {
+        $entrypoint = $this->installEntrypointForLocalDevelopment();
+
+        [$exitCode, $stdout, $stderr] = self::runBinary($entrypoint, '--version', $this->sandbox->path('run'));
+
+        self::assertRuns($exitCode, $stdout, $stderr, 'the local-development entrypoint must load bridge/symfony-console/vendor/autoload.php');
+    }
+
+    public function loadsTheAutoloaderFromTheCurrentWorkingDirectoryAsFallback(): void
+    {
+        $entrypoint = $this->installEntrypointWithoutAdjacentAutoloaders();
+        $workingDirectory = $this->sandbox->path('run');
+        $this->installComposerAutoloader($workingDirectory . '/vendor');
+
+        [$exitCode, $stdout, $stderr] = self::runBinary($entrypoint, '--version', $workingDirectory);
+
+        self::assertRuns($exitCode, $stdout, $stderr, 'the entrypoint must fall back to vendor/autoload.php in the current working directory');
+    }
+
+    #[BeforeTest]
+    public function createSandbox(): void
+    {
+        $this->sandbox = Sandbox::create();
+    }
+
+    #[AfterTest]
+    public function destroySandbox(): void
+    {
+        $this->sandbox->destroy();
+    }
+
+    private static function assertRuns(int $exitCode, string $stdout, string $stderr, string $expectation): void
+    {
+        Assert::same(
+            $exitCode,
+            0,
+            $expectation . '; stdout: ' . $stdout . '; stderr: ' . $stderr,
+        );
+    }
+
+    /**
+     * @return array{int, string, string}
+     */
+    private static function runBinary(string $entrypoint, string $argument, string $workingDirectory): array
+    {
+        $process = \proc_open(
+            [\PHP_BINARY, $entrypoint, $argument],
+            [0 => ['pipe', 'r'], 1 => ['pipe', 'w'], 2 => ['pipe', 'w']],
+            $pipes,
+            $workingDirectory,
+        );
+        \assert(\is_resource($process));
+        \fclose($pipes[0]);
+
+        $stdout = (string) \stream_get_contents($pipes[1]);
+        $stderr = (string) \stream_get_contents($pipes[2]);
+        \fclose($pipes[1]);
+        \fclose($pipes[2]);
+
+        return [\proc_close($process), $stdout, $stderr];
+    }
+
+    private function installEntrypointAsComposerDependency(): string
+    {
+        $entrypoint = $this->installEntrypoint('vendor/testo/bridge-symfony-console/bin/testo');
+        $vendor = $this->sandbox->path('vendor');
+
+        $this->installComposerAutoloader($vendor);
+        $this->makeWorkingDirectory();
+
+        return $entrypoint;
+    }
+
+    private function installEntrypointForLocalDevelopment(): string
+    {
+        $entrypoint = $this->installEntrypoint('bridge/symfony-console/bin/testo');
+
+        $this->installComposerAutoloader($this->sandbox->path('bridge/symfony-console/vendor'));
+        $this->makeWorkingDirectory();
+
+        return $entrypoint;
+    }
+
+    private function installEntrypointWithoutAdjacentAutoloaders(): string
+    {
+        $entrypoint = $this->installEntrypoint('isolated/bin/testo');
+        $this->makeWorkingDirectory();
+
+        return $entrypoint;
+    }
+
+    private function installEntrypoint(string $relativePath): string
+    {
+        $root = \dirname(__DIR__, 4);
+        $entrypoint = $this->sandbox->path($relativePath);
+        $bin = \dirname($entrypoint);
+
+        \is_dir($bin) || \mkdir($bin, 0o755, true) or throw new \RuntimeException("Cannot create {$bin}");
+        \copy($root . '/bridge/symfony-console/bin/testo', $entrypoint)
+            or throw new \RuntimeException("Cannot install the testo entrypoint at {$relativePath}.");
+
+        return $entrypoint;
+    }
+
+    private function installComposerAutoloader(string $vendor): void
+    {
+        $root = \dirname(__DIR__, 4);
+
+        \is_dir($vendor) || \mkdir($vendor, 0o755, true) or throw new \RuntimeException("Cannot create {$vendor}");
+        \file_put_contents($vendor . '/autoload.php', "<?php return require '{$root}/vendor/autoload.php';")
+            or throw new \RuntimeException('Cannot write Composer autoloader stub.');
+    }
+
+    private function makeWorkingDirectory(): void
+    {
+        \mkdir($this->sandbox->path('run')) or throw new \RuntimeException('Cannot create isolated working directory.');
+    }
+}