diff --git a/apps/client/src/common/components/navigation-menu/NavigationMenu.tsx b/apps/client/src/common/components/navigation-menu/NavigationMenu.tsx
index 837ee2763..fdcf0c07c 100644
--- a/apps/client/src/common/components/navigation-menu/NavigationMenu.tsx
+++ b/apps/client/src/common/components/navigation-menu/NavigationMenu.tsx
@@ -5,7 +5,7 @@ import { useLocation } from 'react-router';
 import { Dialog } from '@base-ui-components/react/dialog';
 import { useDisclosure, useFullscreen } from '@mantine/hooks';
 
-import { isLocalhost } from '../../../externals';
+import { isLocalhost, supportsFullscreen } from '../../../externals';
 import { useKeepAwakeOptions } from '../../../features/keep-awake/KeepAwake';
 import { navigatorConstants } from '../../../viewerConfig';
 import { useClientStore } from '../../stores/clientStore';
@@ -56,10 +56,12 @@ function NavigationMenu({ isOpen, onClose }: NavigationMenuProps) {
             </IconButton>
           </div>
           <div className={style.body}>
-            <NavigationMenuItem active={fullscreen} onClick={toggle}>
-              Toggle Fullscreen
-              {fullscreen ? <IoContract /> : <IoExpand />}
-            </NavigationMenuItem>
+            {supportsFullscreen && (
+              <NavigationMenuItem active={fullscreen} onClick={toggle}>
+                Toggle Fullscreen
+                {fullscreen ? <IoContract /> : <IoExpand />}
+              </NavigationMenuItem>
+            )}
             <NavigationMenuItem active={mirror} onClick={() => toggleMirror()}>
               Flip Screen
               <IoSwapVertical />
diff --git a/apps/client/src/externals.ts b/apps/client/src/externals.ts
index 28121b2ee..a11867048 100644
--- a/apps/client/src/externals.ts
+++ b/apps/client/src/externals.ts
@@ -23,7 +23,9 @@ export const isDev = import.meta.env.DEV;
 export const currentHostName = window.location.hostname;
 export const isLocalhost = currentHostName === 'localhost' || currentHostName === '127.0.0.1';
 export const isOntimeCloud = document.querySelector('base')?.hasAttribute('data-is-cloud')
+
 export const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0;
+export const supportsFullscreen = document.fullscreenEnabled;
 
 // resolve entrypoint URLs