diff --git a/src/browser/LocalizableStrings.ts b/src/browser/LocalizableStrings.ts
index e34eaa48..fcf677c0 100644
--- a/src/browser/LocalizableStrings.ts
+++ b/src/browser/LocalizableStrings.ts
@@ -3,5 +3,12 @@
  * @license MIT
  */
 
-export const promptLabel = 'Terminal input';
-export const tooMuchOutput = 'Too much output to announce, navigate to rows manually to read';
+/*
+ * note: intentional design, it's exposed to embedders of xterm.js
+ * so they can change the strings to localize xterm.js. #4055
+ */
+// eslint-disable-next-line prefer-const
+export let promptLabel = 'Terminal input';
+
+// eslint-disable-next-line prefer-const
+export let tooMuchOutput = 'Too much output to announce, navigate to rows manually to read';