diff --git a/NoPrivateNetworkHttpClient.php b/NoPrivateNetworkHttpClient.php
index 855ed8b..4fe9364 100644
--- a/NoPrivateNetworkHttpClient.php
+++ b/NoPrivateNetworkHttpClient.php
@@ -138,7 +138,7 @@ public function request(string $method, string $url, array $options = []): Respo
                     $filterContentHeaders = static function ($h) {
                         return 0 !== stripos($h, 'Content-Length:') && 0 !== stripos($h, 'Content-Type:') && 0 !== stripos($h, 'Transfer-Encoding:');
                     };
-                    $options['header'] = array_filter($options['header'], $filterContentHeaders);
+                    $options['headers'] = array_filter($options['headers'], $filterContentHeaders);
                     $redirectHeaders['no_auth'] = array_filter($redirectHeaders['no_auth'], $filterContentHeaders);
                     $redirectHeaders['with_auth'] = array_filter($redirectHeaders['with_auth'], $filterContentHeaders);
                 }
diff --git a/Tests/HttpClientTestCase.php b/Tests/HttpClientTestCase.php
index d3efa89..c520e59 100644
--- a/Tests/HttpClientTestCase.php
+++ b/Tests/HttpClientTestCase.php
@@ -678,4 +678,26 @@ public function testHeadRequestWithClosureBody()
         $this->assertIsArray($vars);
         $this->assertSame('HEAD', $vars['REQUEST_METHOD']);
     }
+
+    /**
+     * @testWith [301]
+     *           [302]
+     *           [303]
+     */
+    public function testPostToGetRedirect(int $status)
+    {
+        $p = TestHttpServer::start(8067);
+
+        try {
+            $client = $this->getHttpClient(__FUNCTION__);
+
+            $response = $client->request('POST', 'http://localhost:8057/custom?status=' . $status . '&headers[]=Location%3A%20%2F');
+            $body = $response->toArray();
+        } finally {
+            $p->stop();
+        }
+
+        $this->assertSame('GET', $body['REQUEST_METHOD']);
+        $this->assertSame('/', $body['REQUEST_URI']);
+    }
 }
diff --git a/Tests/NoPrivateNetworkHttpClientTest.php b/Tests/NoPrivateNetworkHttpClientTest.php
index c160dff..ddd83c4 100644
--- a/Tests/NoPrivateNetworkHttpClientTest.php
+++ b/Tests/NoPrivateNetworkHttpClientTest.php
@@ -175,6 +175,27 @@ public function testNonCallableOnProgressCallback()
         $client->request('GET', $url, ['on_progress' => $customCallback]);
     }
 
+    public function testHeadersArePassedOnRedirect()
+    {
+        $ipAddr = '104.26.14.6';
+        $url = sprintf('http://%s/', $ipAddr);
+        $content = 'foo';
+
+        $callback = function ($method, $url, $options) use ($content): MockResponse {
+            $this->assertArrayHasKey('headers', $options);
+            $this->assertNotContains('content-type: application/json', $options['headers']);
+            $this->assertContains('foo: bar', $options['headers']);
+            return new MockResponse($content);
+        };
+        $responses = [
+            new MockResponse('', ['http_code' => 302, 'redirect_url' => 'http://104.26.14.7']),
+            $callback,
+        ];
+        $client = new NoPrivateNetworkHttpClient(new MockHttpClient($responses));
+        $response = $client->request('POST', $url, ['headers' => ['foo' => 'bar', 'content-type' => 'application/json']]);
+        $this->assertEquals($content, $response->getContent());
+    }
+
     private function getMockHttpClient(string $ipAddr, string $content)
     {
         return new MockHttpClient(new MockResponse($content, ['primary_ip' => $ipAddr]));