diff --git a/src/hooks/useIsDesktopApp.ts b/src/hooks/useIsDesktopApp.ts
index e801fca7..6245cf3d 100644
--- a/src/hooks/useIsDesktopApp.ts
+++ b/src/hooks/useIsDesktopApp.ts
@@ -1,3 +1,10 @@
-export function useIsDesktopApp(): boolean {
-  return navigator.userAgent.includes("P-Stream/");
+// Desktop app is detected via a global set by the Electron preload script.
+declare global {
+  interface Window {
+    __PSTREAM_DESKTOP__?: boolean;
+  }
+}
+
+export function useIsDesktopApp(): boolean {
+  return Boolean(window.__PSTREAM_DESKTOP__);
 }