diff --git a/ElectronNET.Host/api/browserWindows.js b/ElectronNET.Host/api/browserWindows.js
index dcf2bbd..939d655 100644
--- a/ElectronNET.Host/api/browserWindows.js
+++ b/ElectronNET.Host/api/browserWindows.js
@@ -602,7 +602,8 @@ module.exports = (socket, app) => {
         getWindowById(id)?.setVibrancy(type);
     });
     socket.on('browserWindowSetExcludedFromShownWindowsMenu', (id) => {
-        getWindowById(id)?.excludedFromShownWindowsMenu = true;
+        const w = getWindowById(id);
+        if (w) w.excludedFromShownWindowsMenu = true;
     });
 
     socket.on('browserWindow-setBrowserView', (id, browserViewId) => {
diff --git a/ElectronNET.Host/api/browserWindows.ts b/ElectronNET.Host/api/browserWindows.ts
index fe146cd..6c8fedc 100644
--- a/ElectronNET.Host/api/browserWindows.ts
+++ b/ElectronNET.Host/api/browserWindows.ts
@@ -765,7 +765,8 @@ export = (socket: Socket, app: Electron.App) => {
     });
 
     socket.on('browserWindowSetExcludedFromShownWindowsMenu', (id) => {
-        getWindowById(id)?.excludedFromShownWindowsMenu = true;
+        const w = getWindowById(id);
+        if(w) w.excludedFromShownWindowsMenu = true;
     });
 
     socket.on('browserWindow-setBrowserView', (id, browserViewId) => {