diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index b64c1d330bf..b0374557106 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -220,7 +220,7 @@ en:
       invited_by: "Invited By"
       trust_level: "Trust Level"
       notifications: "Notifications"
-      dynamic_favicon: "Show incoming message notifications on favicon"
+      dynamic_favicon: "Show incoming message notifications on favicon (experimental)"
       external_links_in_new_tab: "Open all external links in a new tab"
       enable_quoting: "Enable quote reply for highlighted text"
       change: "change"
@@ -1536,7 +1536,7 @@ en:
       download: "download"
 
     keyboard_shortcuts_help:
-      title: 'Keyboard Shortcuts'
+      title: 'Keyboard Shortcuts (experimental)'
       jump_to:
         title: 'Jump To'
         home: '<b>g</b> then <b>h</b> Home (Latest)'