diff --git a/common/modules/mixly-modules/common/app.js b/common/modules/mixly-modules/common/app.js
index 28c03304..0d10bfd1 100644
--- a/common/modules/mixly-modules/common/app.js
+++ b/common/modules/mixly-modules/common/app.js
@@ -82,6 +82,7 @@ class App extends Component {
     constructor(element) {
         super();
         const $content = $(HTMLTemplate.get('html/app.html').render());
+        $content.on('contextmenu', (e) => e.preventDefault());
         this.setContent($content);
         this.mountOn($(element));
         this.#nav_ = new Nav();
diff --git a/mixly-sw/mixly-modules/common/loader.js b/mixly-sw/mixly-modules/common/loader.js
index 4c24ccdf..1666295d 100644
--- a/mixly-sw/mixly-modules/common/loader.js
+++ b/mixly-sw/mixly-modules/common/loader.js
@@ -33,6 +33,7 @@ const { PythonShell } = Electron;
 
 Loader.init = () => {
     $('body').append(XML.TEMPLATE_STR['INTERFACE']);
+    $('body').on('contextmenu', (e) => e.preventDefault());
     if (goog.isElectron) {
         PythonShell.init();
     }