diff --git a/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php b/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php
index 8feb7cb6d..12d7f0b09 100644
--- a/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php
+++ b/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php
@@ -27,6 +27,7 @@
 use Facebook\Exceptions\FacebookSDKException;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\Message\ResponseInterface;
 use GuzzleHttp\Ring\Exception\RingException;
 use GuzzleHttp\Exception\RequestException;
@@ -41,9 +42,9 @@ class FacebookGuzzleHttpClient implements FacebookHttpClientInterface
     /**
      * @param \GuzzleHttp\Client|null The Guzzle client.
      */
-    public function __construct(Client $guzzleClient = null)
+    public function __construct()
     {
-        $this->guzzleClient = $guzzleClient ?: new Client();
+        $this->guzzleClient = new Client();
     }
 
     /**
@@ -51,47 +52,26 @@ public function __construct(Client $guzzleClient = null)
      */
     public function send($url, $method, $body, array $headers, $timeOut)
     {
-        $options = [
-            'headers' => $headers,
-            'body' => $body,
-            'timeout' => $timeOut,
-            'connect_timeout' => 10,
-            'verify' => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem',
-        ];
-        $request = $this->guzzleClient->createRequest($method, $url, $options);
+        $request = new Request($method, $url, $headers, $body);
 
         try {
-            $rawResponse = $this->guzzleClient->send($request);
-        } catch (RequestException $e) {
-            $rawResponse = $e->getResponse();
-
-            if ($e->getPrevious() instanceof RingException || !$rawResponse instanceof ResponseInterface) {
-                throw new FacebookSDKException($e->getMessage(), $e->getCode());
-            }
+            $response = $this->guzzleClient->send($request, ['timeout' => $timeOut, 'http_errors' => false]);
+        } catch (GuzzleHttp\Exception\RequestException $e) {
+            throw new FacebookSDKException($e->getMessage(), $e->getCode());
         }
 
-        $rawHeaders = $this->getHeadersAsString($rawResponse);
-        $rawBody = $rawResponse->getBody();
-        $httpStatusCode = $rawResponse->getStatusCode();
-
-        return new GraphRawResponse($rawHeaders, $rawBody, $httpStatusCode);
-    }
-
-    /**
-     * Returns the Guzzle array of headers as a string.
-     *
-     * @param ResponseInterface $response The Guzzle response.
-     *
-     * @return string
-     */
-    public function getHeadersAsString(ResponseInterface $response)
-    {
-        $headers = $response->getHeaders();
-        $rawHeaders = [];
-        foreach ($headers as $name => $values) {
-            $rawHeaders[] = $name . ": " . implode(", ", $values);
+        $httpStatusCode = $response->getStatusCode();
+        $responseHeaders = $response->getHeaders();
+        foreach ($responseHeaders as $key => $values) {
+            $responseHeaders[$key] = implode(', ', $values);
         }
 
-        return implode("\r\n", $rawHeaders);
+        $responseBody = $response->getBody()->getContents();
+
+        return new GraphRawResponse(
+            $responseHeaders,
+            $responseBody,
+            $httpStatusCode
+        );
     }
 }