diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index 58c4f0539e4e..abf21d365cbd 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -380,7 +380,7 @@ public function request(string $method, string $uri, array $parameters = [], arr
             $uri = preg_replace('{^'.parse_url($uri, PHP_URL_SCHEME).'}', $server['HTTPS'] ? 'https' : 'http', $uri);
         }
 
-        if (!$this->history->isEmpty()) {
+        if (!isset($server['HTTP_REFERER']) && !$this->history->isEmpty()) {
             $server['HTTP_REFERER'] = $this->history->current()->getUri();
         }
 
diff --git a/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php b/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
index 79d47bebe17e..25e76cb80168 100644
--- a/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
@@ -230,6 +230,15 @@ public function testRequestReferer()
         $this->assertEquals('http://www.example.com/foo/foobar', $server['HTTP_REFERER'], '->request() sets the referer');
     }
 
+    public function testRequestRefererCanBeOverridden()
+    {
+        $client = new TestClient();
+        $client->request('GET', 'http://www.example.com/foo/foobar');
+        $client->request('GET', 'bar', [], [], ['HTTP_REFERER' => 'xyz']);
+        $server = $client->getRequest()->getServer();
+        $this->assertEquals('xyz', $server['HTTP_REFERER'], '->request() allows referer to be overridden');
+    }
+
     public function testRequestHistory()
     {
         $client = $this->getBrowser();
diff --git a/src/Symfony/Component/VarDumper/Caster/SplCaster.php b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
index ed19297a34f2..0bb773e07b3b 100644
--- a/src/Symfony/Component/VarDumper/Caster/SplCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
@@ -175,6 +175,7 @@ public static function castObjectStorage(\SplObjectStorage $c, array $a, Stub $s
     {
         $storage = [];
         unset($a[Caster::PREFIX_DYNAMIC."\0gcdata"]); // Don't hit https://bugs.php.net/65967
+        unset($a["\0SplObjectStorage\0storage"]);
 
         $clone = clone $c;
         foreach ($clone as $obj) {