diff --git a/src/ServerRequestFactory.php b/src/ServerRequestFactory.php
index 5924f68f..ec81fc9c 100644
--- a/src/ServerRequestFactory.php
+++ b/src/ServerRequestFactory.php
@@ -114,10 +114,10 @@ public static function fromSwoole(swoole_http_request $request)
         if (! extension_loaded('swoole')) {
             throw new Exception\RuntimeException('Swoole extension is not installed!');
         }
-        $get    = $request->get ?? [];
-        $post   = $request->post ?? [];
-        $cookie = $request->cookie ?? [];
-        $files  = $request->files ?? [];
+        $get    = isset($request->get) ? $request->get : [];
+        $post   = isset($request->post) ? $request->post : [];
+        $cookie = isset($request->cookie) ? $request->cookie : [];
+        $files  = isset($request->files) ? $request->files : [];
 
         $server = [
             'REQUEST_METHOD' => $request->server['request_method'],
@@ -126,23 +126,36 @@ public static function fromSwoole(swoole_http_request $request)
             'REQUEST_TIME' => $request->server['request_time'],
             'GATEWAY_INTERFACE' => 'swoole/' . SWOOLE_VERSION,
             // Server
-            'SERVER_PROTOCOL' => $request->header['server_protocol'] ?? $request->server['server_protocol'],
-            'REQUEST_SCHEMA' => $request->header['request_scheme'] ??
+            'SERVER_PROTOCOL' => isset($request->header['server_protocol']) ?
+                                 $request->header['server_protocol'] : $request->server['server_protocol'],
+            'REQUEST_SCHEMA' => isset($request->header['request_scheme']) ?
+                                $request->header['request_scheme'] :
                                 explode('/', $request->server['server_protocol'])[0],
-            'SERVER_NAME' => $request->header['server_name'] ?? $request->header['host'],
+            'SERVER_NAME' => isset($request->header['server_name']) ?
+                             $request->header['server_name'] : $request->header['host'],
             'SERVER_ADDR' => $request->header['host'],
-            'SERVER_PORT' => $request->header['server_port'] ?? $request->server['server_port'],
-            'REMOTE_ADDR' => $request->server['remote_addr'] ?? $request->header['host'],
-            'REMOTE_PORT' => $request->header['remote_port'] ?? $request->server['remote_port'],
-            'QUERY_STRING' => $request->server['query_string'] ?? '',
+            'SERVER_PORT' => isset($request->header['server_port']) ?
+                             $request->header['server_port'] : $request->server['server_port'],
+            'REMOTE_ADDR' => isset($request->server['remote_addr']) ?
+                             $request->server['remote_addr'] : $request->header['host'],
+            'REMOTE_PORT' => isset($request->header['remote_port']) ?
+                             $request->header['remote_port'] : $request->server['remote_port'],
+            'QUERY_STRING' => isset($request->server['query_string']) ?
+                              $request->server['query_string'] : '',
             // Headers
             'HTTP_HOST' => $request->header['host'],
-            'HTTP_USER_AGENT' => $request->header['user-agent'] ?? '',
-            'HTTP_ACCEPT' => $request->header['accept'] ?? '*/*',
-            'HTTP_ACCEPT_LANGUAGE' => $request->header['accept-language'] ?? '',
-            'HTTP_ACCEPT_ENCODING' => $request->header['accept-encoding'] ?? '',
-            'HTTP_CONNECTION' => $request->header['connection'] ?? '',
-            'HTTP_CACHE_CONTROL' => $request->header['cache-control'] ?? '',
+            'HTTP_USER_AGENT' => isset($request->header['user-agent']) ?
+                                 $request->header['user-agent'] : '',
+            'HTTP_ACCEPT' => isset($request->header['accept']) ?
+                             $request->header['accept'] : '*/*',
+            'HTTP_ACCEPT_LANGUAGE' => isset($request->header['accept-language']) ?
+                                      $request->header['accept-language'] : '',
+            'HTTP_ACCEPT_ENCODING' => isset($request->header['accept-encoding']) ?
+                                      $request->header['accept-encoding'] : '',
+            'HTTP_CONNECTION' => isset($request->header['connection']) ?
+                                 $request->header['connection'] : '',
+            'HTTP_CACHE_CONTROL' => isset($request->header['cache-control']) ?
+                                    $request->header['cache-control'] : '',
         ];
 
         $headers = [];