diff --git a/src/static/_locales/ca/messages.json b/src/static/_locales/ca/messages.json
index 07b2782..c9c294c 100644
--- a/src/static/_locales/ca/messages.json
+++ b/src/static/_locales/ca/messages.json
@@ -585,6 +585,14 @@
     "message": "Tendència",
     "description": "Label used in a thread to show it has been manually marked as trending."
   },
+  "inject_threadpagedesign_warning": {
+    "message": "Aquest fil podria no funcionar correctament. Això és perquè usa la funció de respostes anidades, i has activat l'antic disseny dels fils a les opcions d'Eines avançades per TW, que no suporta les respostes anidades.",
+    "description": "Message showed above threads which might not work properly because of the fact that the old thread design is not compatible with nested replies."
+  },
+  "btn_learnmore": {
+    "message": "Més informació",
+    "description": "Text shown besides a warning message which the user can click to learn more about the message itself."
+  },
   "actionbadge_permissions_requested": {
     "message": "Algunes funcions necessiten permisos addicionals per funcionar. Fes clic per arreglar-lo.",
     "description": "Tooltip for the extension icon when a feature is enabled but it needs several permissions to be granted."