diff --git a/src/components/main/Main.tsx b/src/components/main/Main.tsx
index 8bb37e6c16..28f1f3ef97 100644
--- a/src/components/main/Main.tsx
+++ b/src/components/main/Main.tsx
@@ -63,6 +63,7 @@ import { useJune } from '../../hooks/useJune';
 import useLastCallback from '../../hooks/useLastCallback';
 import usePreventPinchZoomGesture from '../../hooks/usePreventPinchZoomGesture';
 import useShortcutCmdE from '../../hooks/useShortcutCmdE';
+import useShortcutCmdU from '../../hooks/useShortcutCmdU';
 import useShowTransition from '../../hooks/useShowTransition';
 import useSyncEffect from '../../hooks/useSyncEffect';
 import useTimeout from '../../hooks/useTimeout';
@@ -338,6 +339,7 @@ const Main: FC<OwnProps & StateProps> = ({
 
   useArchiver({ isManual: false });
 
+  useShortcutCmdU();
   useShortcutCmdE();
 
   useEffect(() => {
diff --git a/src/components/middle/composer/AttachMenu.tsx b/src/components/middle/composer/AttachMenu.tsx
index 93f9d614f0..66047d3cfc 100644
--- a/src/components/middle/composer/AttachMenu.tsx
+++ b/src/components/middle/composer/AttachMenu.tsx
@@ -122,7 +122,7 @@ const AttachMenu: FC<OwnProps> = ({
 
   useEffect(() => {
     function handleKey(e: KeyboardEvent) {
-      if (((IS_MAC_OS && e.metaKey) || (!IS_MAC_OS && e.ctrlKey)) && e.code === 'KeyU') {
+      if (((IS_MAC_OS && e.metaKey) || (!IS_MAC_OS && e.ctrlKey)) && e.shiftKey && e.code === 'KeyU') {
         e.preventDefault();
         handleQuickSelect();
       }
diff --git a/src/hooks/useChatContextActions.ts b/src/hooks/useChatContextActions.ts
index e9c1975257..cb6a2ef554 100644
--- a/src/hooks/useChatContextActions.ts
+++ b/src/hooks/useChatContextActions.ts
@@ -95,10 +95,10 @@ const useChatContextActions = ({
     }
 
     const actionMaskAsRead = (chat.unreadCount || chat.hasUnreadMark)
-      ? { title: lang('MarkAsRead'), icon: 'readchats', handler: () => toggleChatUnread({ id: chat.id }) }
+      ? { title: lang('MarkAsReadHotkey'), icon: 'readchats', handler: () => toggleChatUnread({ id: chat.id }) }
       : undefined;
     const actionMarkAsUnread = !(chat.unreadCount || chat.hasUnreadMark) && !chat.isForum
-      ? { title: lang('MarkAsUnread'), icon: 'unread', handler: () => toggleChatUnread({ id: chat.id }) }
+      ? { title: lang('MarkAsUnreadHotkey'), icon: 'unread', handler: () => toggleChatUnread({ id: chat.id }) }
       : undefined;
 
     const actionArchive = isChatArchived(chat)
diff --git a/src/hooks/useShortcutCmdU.ts b/src/hooks/useShortcutCmdU.ts
new file mode 100644
index 0000000000..061c3db32e
--- /dev/null
+++ b/src/hooks/useShortcutCmdU.ts
@@ -0,0 +1,32 @@
+import { useCallback, useEffect } from '../lib/teact/teact';
+import { getActions, getGlobal } from '../global';
+
+import { selectCurrentChat } from '../global/selectors';
+import { IS_MAC_OS } from '../util/windowEnvironment';
+import useLang from './useLang';
+
+function useShortcutCmdU() {
+  const { showNotification, toggleChatUnread } = getActions();
+  const lang = useLang();
+
+  const handleKeyDown = useCallback((e: KeyboardEvent) => {
+    if (((IS_MAC_OS && e.metaKey) || (!IS_MAC_OS && e.ctrlKey)) && !e.shiftKey && e.code === 'KeyU') {
+      e.preventDefault();
+      const global = getGlobal();
+      const chat = selectCurrentChat(global);
+      if (chat && !chat.isForum) {
+        showNotification({
+          message: lang((chat.unreadCount || chat.hasUnreadMark) ? 'MarkedAsRead' : 'MarkedAsUnread'),
+        });
+        toggleChatUnread({ id: chat.id });
+      }
+    }
+  }, [toggleChatUnread, lang]);
+
+  useEffect(() => {
+    document.addEventListener('keydown', handleKeyDown);
+    return () => document.removeEventListener('keydown', handleKeyDown);
+  }, [handleKeyDown]);
+}
+
+export default useShortcutCmdU;
diff --git a/src/util/fallbackLangPack.ts b/src/util/fallbackLangPack.ts
index f1826789b8..f5af6c4bd8 100644
--- a/src/util/fallbackLangPack.ts
+++ b/src/util/fallbackLangPack.ts
@@ -23,6 +23,8 @@ export default {
   FilterAllChats: 'Inbox',
   Inbox: 'Inbox',
   MarkAsUnread: 'Mark as unread',
+  MarkAsUnreadHotkey: `Mark as unread ${IS_MAC_OS ? '[⌘+U]' : '[Ctrl+U]'}`,
+  MarkedAsUnread: 'The chat marked as unread',
   UnpinFromTop: 'Unpin from top',
   'ChatList.Mute': 'Mute',
   Archive: 'Archive',
@@ -36,6 +38,8 @@ export default {
   'Month.GenJune': 'June',
   'Month.ShortJune': 'Jun',
   MarkAsRead: 'Mark as read',
+  MarkAsReadHotkey: `Mark as read ${IS_MAC_OS ? '[⌘+U]' : '[Ctrl+U]'}`,
+  MarkedAsRead: 'The chat marked as read',
   PinToTop: 'Pin to top',
   'ChatList.Unmute': 'Unmute',
   'Group.LeaveGroup': 'Leave Group',
@@ -103,7 +107,7 @@ export default {
     otherValue: 'last seen %@ minutes ago',
   },
   'AttachmentMenu.PhotoOrVideo': 'Photo or Video',
-  'AttachmentMenu.PhotoOrVideoHotkey': IS_MAC_OS ? 'Photo or Video [⌘+U]' : 'Photo or Video [Ctrl+U]',
+  'AttachmentMenu.PhotoOrVideoHotkey': `Photo or Video ${IS_MAC_OS ? '[⌘+⇧+U]' : '[Ctrl+Shift+U]'}`,
   AttachDocument: 'File',
   SendWithoutSound: 'Send without sound',
   ScheduleMessage: 'Schedule message',