diff --git a/src/statusbar/leetCodeStatusBarController.ts b/src/statusbar/leetCodeStatusBarController.ts
index 177853a1..d6058010 100644
--- a/src/statusbar/leetCodeStatusBarController.ts
+++ b/src/statusbar/leetCodeStatusBarController.ts
@@ -21,9 +21,7 @@ class LeetCodeStatusBarController implements Disposable {
     }
 
     public updateStatusBar(status: UserStatus, user?: string): void {
-        if (this.statusBar) {
-            this.statusBar.updateStatusBar(status, user);
-        }
+        this.statusBar.updateStatusBar(status, user);
     }
 
     public dispose(): void {
diff --git a/src/utils/problemUtils.ts b/src/utils/problemUtils.ts
index c7946bbc..f66642e5 100644
--- a/src/utils/problemUtils.ts
+++ b/src/utils/problemUtils.ts
@@ -1,3 +1,6 @@
+// Copyright (c) jdneo. All rights reserved.
+// Licensed under the MIT license.
+
 import kebabCase = require("lodash.kebabcase");
 import { IProblem, langExt } from "../shared";
 
diff --git a/src/webview/MarkdownEngine.ts b/src/webview/MarkdownEngine.ts
index bfff64d8..0d56382e 100644
--- a/src/webview/MarkdownEngine.ts
+++ b/src/webview/MarkdownEngine.ts
@@ -1,3 +1,6 @@
+// Copyright (c) jdneo. All rights reserved.
+// Licensed under the MIT license.
+
 import * as hljs from "highlight.js";
 import * as MarkdownIt from "markdown-it";
 import * as os from "os";