diff --git a/locales/pt-PT/browser/browser/preferences/zen-preferences.ftl b/locales/pt-PT/browser/browser/preferences/zen-preferences.ftl
index a18318154..66e391279 100644
--- a/locales/pt-PT/browser/browser/preferences/zen-preferences.ftl
+++ b/locales/pt-PT/browser/browser/preferences/zen-preferences.ftl
@@ -46,6 +46,11 @@ zen-tabs-unloader-enabled =
     .label = Habilitar a Hibernação de Separadores
 zen-tabs-close-on-back-with-no-history = 
     .label = Close tab and switch to its owner tab (or most recently used tab) when going back with no history
+zen-tabs-cycle-by-attribute = 
+    .label = Ctrl+Tab cycles within Essential or Workspace tabs only
+zen-tabs-cycle-ignore-pending-tabs = 
+    .label = Ignore Pending tabs when cycling with Ctrl+Tab
+zen-tabs-cycle-by-attribute-warning = Ctrl+Tab will cycle by recently used order, as it is enabled
 zen-look-and-feel-compact-toolbar-themed = 
     .label = Usar fundo temático para a barra de ferramentas compacta
 zen-workspace-continue-where-left-off =