diff --git a/frontend/src/i18n/pl.json b/frontend/src/i18n/pl.json
index 06f1c8fd..b9db7455 100644
--- a/frontend/src/i18n/pl.json
+++ b/frontend/src/i18n/pl.json
@@ -158,6 +158,7 @@
     "video": "Wideo"
   },
   "settings": {
+    "aceEditorTheme": "Ace editor theme",
     "admin": "Admin",
     "administrator": "Administrator",
     "allowCommands": "Wykonaj polecenie",