diff --git a/src/ui/component/app/view.jsx b/src/ui/component/app/view.jsx
index 456dd9cb4..b500adac7 100644
--- a/src/ui/component/app/view.jsx
+++ b/src/ui/component/app/view.jsx
@@ -16,7 +16,9 @@ import usePrevious from 'effects/use-previous';
 import Button from 'component/button';
 
 export const MAIN_WRAPPER_CLASS = 'main-wrapper';
-const IS_MAC = process.platform === 'darwin';
+// @if TARGET='app'
+export const IS_MAC = process.platform === 'darwin';
+// @endif
 
 type Props = {
   alertError: (string | {}) => void,
@@ -126,7 +128,11 @@ function App(props: Props) {
 
   return (
     <div
-      className={classnames(MAIN_WRAPPER_CLASS, { [`${MAIN_WRAPPER_CLASS}--mac`]: IS_MAC })}
+      className={classnames(MAIN_WRAPPER_CLASS, {
+        // @if TARGET='app'
+        [`${MAIN_WRAPPER_CLASS}--mac`]: IS_MAC,
+        // @endif
+      })}
       ref={appRef}
       onContextMenu={e => openContextMenu(e)}
     >
diff --git a/src/ui/component/header/view.jsx b/src/ui/component/header/view.jsx
index 68422545b..e0bf15763 100644
--- a/src/ui/component/header/view.jsx
+++ b/src/ui/component/header/view.jsx
@@ -11,8 +11,9 @@ import WunderBar from 'component/wunderbar';
 import Icon from 'component/common/icon';
 import { Menu, MenuList, MenuButton, MenuItem } from '@reach/menu-button';
 import Tooltip from 'component/common/tooltip';
-
-const IS_MAC = process.platform === 'darwin';
+// @if TARGET='app'
+import { IS_MAC } from 'component/app/view';
+// @endif
 
 type Props = {
   balance: string,
@@ -64,7 +65,14 @@ const Header = (props: Props) => {
   }
 
   return (
-    <header className={classnames('header', { 'header--minimal': minimal, 'header--mac': IS_MAC })}>
+    <header
+      className={classnames('header', {
+        'header--minimal': minimal,
+        // @if TARGET='app'
+        'header--mac': IS_MAC,
+        // @endif
+      })}
+    >
       <div className="header__contents">
         <div className="header__navigation">
           <Button
diff --git a/static/app-strings.json b/static/app-strings.json
index 76da0a906..13d64047d 100644
--- a/static/app-strings.json
+++ b/static/app-strings.json
@@ -803,5 +803,6 @@
   "Enter a LBRY URL or search for videos, music, games and more": "Enter a LBRY URL or search for videos, music, games and more",
   "This app will automatically download new free content from channels you are subscribed to. You may configure this in Settings or on the Subscriptions page.": "This app will automatically download new free content from channels you are subscribed to. You may configure this in Settings or on the Subscriptions page.",
   "(Only available on the desktop app.)": "(Only available on the desktop app.)",
-  "If we have your email address, we will send you notifications related to new content. You may configure these emails from the Help page.": "If we have your email address, we will send you notifications related to new content. You may configure these emails from the Help page."
-}
+  "If we have your email address, we will send you notifications related to new content. You may configure these emails from the Help page.": "If we have your email address, we will send you notifications related to new content. You may configure these emails from the Help page.",
+  "Light": "Light"
+}
\ No newline at end of file