diff --git a/src/Http/Helpers.php b/src/Http/Helpers.php
index b04181cc..efde3de6 100644
--- a/src/Http/Helpers.php
+++ b/src/Http/Helpers.php
@@ -21,7 +21,7 @@ final class Helpers
 	use Nette\StaticClass;
 
 	/** @internal */
-	public const STRICT_COOKIE_NAME = 'nette-samesite';
+	public const STRICT_COOKIE_NAME = '_nss';
 
 
 	/**
diff --git a/tests/Http.DI/HttpExtension.sameSiteProtection.phpt b/tests/Http.DI/HttpExtension.sameSiteProtection.phpt
index a9d3dbb3..842d941d 100644
--- a/tests/Http.DI/HttpExtension.sameSiteProtection.phpt
+++ b/tests/Http.DI/HttpExtension.sameSiteProtection.phpt
@@ -26,7 +26,7 @@ $container->initialize();
 $headers = headers_list();
 Assert::contains(
 	PHP_VERSION_ID >= 70300
-		? 'Set-Cookie: nette-samesite=1; path=/; HttpOnly; SameSite=Strict'
-		: 'Set-Cookie: nette-samesite=1; path=/; SameSite=Strict; HttpOnly',
+		? 'Set-Cookie: _nss=1; path=/; HttpOnly; SameSite=Strict'
+		: 'Set-Cookie: _nss=1; path=/; SameSite=Strict; HttpOnly',
 	$headers
 );