diff --git a/src/utils/root-dialog-observer.ts b/src/utils/root-dialog-observer.ts
index 21487d6..2772649 100644
--- a/src/utils/root-dialog-observer.ts
+++ b/src/utils/root-dialog-observer.ts
@@ -23,7 +23,7 @@ export class RootDialogObserver {
         },
     });
 
-    private static $btnWallpaper = AppInterface &&createButton({
+    private static $btnWallpaper = AppInterface && createButton({
         icon: BxIcon.DOWNLOAD,
         label: t('wallpaper'),
         style: ButtonStyle.FOCUSABLE | ButtonStyle.GHOST | ButtonStyle.FULL_WIDTH | ButtonStyle.NORMAL_CASE | ButtonStyle.NORMAL_LINK,