diff --git a/public/locales/en-GB/app.json b/public/locales/en-GB/app.json
index 34d84534..fb9ebfe9 100644
--- a/public/locales/en-GB/app.json
+++ b/public/locales/en-GB/app.json
@@ -40,6 +40,7 @@
   "Element Call Home": "Element Call Home",
   "Element Call is temporarily not end-to-end encrypted while we test scalability.": "Element Call is temporarily not end-to-end encrypted while we test scalability.",
   "Enable end-to-end encryption (password protected calls)": "Enable end-to-end encryption (password protected calls)",
+  "End-to-end encryption isn't supported on your browser.": "End-to-end encryption isn't supported on your browser.",
   "Exit full screen": "Exit full screen",
   "Expose developer settings in the settings window.": "Expose developer settings in the settings window.",
   "Feedback": "Feedback",