diff --git a/src/Symfony/Component/HttpClient/Psr18Client.php b/src/Symfony/Component/HttpClient/Psr18Client.php
index 9d3628afb0..ee8c813b46 100644
--- a/src/Symfony/Component/HttpClient/Psr18Client.php
+++ b/src/Symfony/Component/HttpClient/Psr18Client.php
@@ -92,7 +92,7 @@ final class Psr18Client implements ClientInterface, RequestFactoryInterface, Str
                 }
             }
 
-            $body = isset(class_uses($response)[ResponseTrait::class]) ? $response->toStream() : StreamWrapper::createResource($response, $this->client);
+            $body = isset(class_uses($response)[ResponseTrait::class]) ? $response->toStream(false) : StreamWrapper::createResource($response, $this->client);
 
             return $psrResponse->withBody($this->streamFactory->createStreamFromResource($body));
         } catch (TransportExceptionInterface $e) {
diff --git a/src/Symfony/Component/HttpClient/Response/ResponseTrait.php b/src/Symfony/Component/HttpClient/Response/ResponseTrait.php
index 10c2d505c3..ed7281e1be 100644
--- a/src/Symfony/Component/HttpClient/Response/ResponseTrait.php
+++ b/src/Symfony/Component/HttpClient/Response/ResponseTrait.php
@@ -21,6 +21,10 @@ use Symfony\Component\HttpClient\Exception\RedirectionException;
 use Symfony\Component\HttpClient\Exception\ServerException;
 use Symfony\Component\HttpClient\Exception\TransportException;
 use Symfony\Component\HttpClient\Internal\ClientState;
+use Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface;
+use Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface;
+use Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface;
+use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
 
 /**
  * Implements the common logic for response classes.
@@ -182,11 +186,16 @@ trait ResponseTrait
      * Casts the response to a PHP stream resource.
      *
      * @return resource|null
+     *
+     * @throws TransportExceptionInterface   When a network error occurs
+     * @throws RedirectionExceptionInterface On a 3xx when $throw is true and the "max_redirects" option has been reached
+     * @throws ClientExceptionInterface      On a 4xx when $throw is true
+     * @throws ServerExceptionInterface      On a 5xx when $throw is true
      */
-    public function toStream()
+    public function toStream(bool $throw = true)
     {
         // Ensure headers arrived
-        $this->getStatusCode();
+        $this->getHeaders($throw);
 
         return StreamWrapper::createResource($this, null, $this->content, $this->handle && 'stream' === get_resource_type($this->handle) ? $this->handle : null);
     }