diff --git a/src/LanguageServer.php b/src/LanguageServer.php
index 939bc99..8066b24 100644
--- a/src/LanguageServer.php
+++ b/src/LanguageServer.php
@@ -109,8 +109,8 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
      *
      * @param ClientCapabilities $capabilities The capabilities provided by the client (editor)
      * @param string|null $rootPath The rootPath of the workspace. Is null if no folder is open.
-	 * @param int|null $processId The process Id of the parent process that started the server. Is null if the process has not
-	 *          been started by another process. If the parent process is not alive then the server should exit (see exit notification) its process.
+     * @param int|null $processId The process Id of the parent process that started the server. Is null if the process has not been started
+     *                 by another process. If the parent process is not alive then the server should exit (see exit notification) its process.
      * @return InitializeResult
      */
     public function initialize(ClientCapabilities $capabilities, string $rootPath = null, int $processId = null): InitializeResult
diff --git a/tests/LanguageServerTest.php b/tests/LanguageServerTest.php
index 272c458..2e0fb4e 100644
--- a/tests/LanguageServerTest.php
+++ b/tests/LanguageServerTest.php
@@ -68,7 +68,7 @@ class LanguageServerTest extends TestCase
         });
         $server = new LanguageServer($input, $output);
         $capabilities = new ClientCapabilities;
-        $server->initialize(getmypid(), $capabilities, realpath(__DIR__ . '/../fixtures'));
+        $server->initialize($capabilities, realpath(__DIR__ . '/../fixtures'), getmypid());
         $promise->wait();
     }
 
@@ -116,7 +116,7 @@ class LanguageServerTest extends TestCase
         $capabilities = new ClientCapabilities;
         $capabilities->xfilesProvider = true;
         $capabilities->xcontentProvider = true;
-        $server->initialize(getmypid(), $capabilities, $rootPath);
+        $server->initialize($capabilities, $rootPath, getmypid());
         $promise->wait();
         $this->assertTrue($filesCalled);
         $this->assertTrue($contentCalled);