diff --git a/src/Symfony/Component/BrowserKit/Tests/ClassThatInheritClient.php b/src/Symfony/Component/BrowserKit/Tests/ClassThatInheritClient.php
index 9f6a55ae9d..9b44547204 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ClassThatInheritClient.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ClassThatInheritClient.php
@@ -37,7 +37,10 @@ class ClassThatInheritClient extends AbstractBrowser
         return $response;
     }
 
-    public function submit(DomCrawlerForm $form, array $values = []): Crawler
+    /**
+     * @param array $serverParameters
+     */
+    public function submit(DomCrawlerForm $form, array $values = []/*, array $serverParameters = []*/): Crawler
     {
         return parent::submit($form, $values);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
index 4ec530b7f8..4a24066b2c 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
@@ -159,7 +159,7 @@ class ExceptionListenerTest extends TestCase
 
 class TestLogger extends Logger implements DebugLoggerInterface
 {
-    public function countErrors(Request $request = null)
+    public function countErrors(Request $request = null): int
     {
         return \count($this->logs['critical']);
     }