diff --git a/suite/locales/en-US/chrome/browser/unix/navigator.properties b/suite/locales/en-US/chrome/browser/unix/navigator.properties
index cd96062e0a5..e7613667b45 100644
--- a/suite/locales/en-US/chrome/browser/unix/navigator.properties
+++ b/suite/locales/en-US/chrome/browser/unix/navigator.properties
@@ -1,3 +1,5 @@
 # moved from navigator/locale/navigator.properties
 # valid collation options are: <empty string> or useCodePointOrder
 intl.collationOption=
+intl.charset.default=ISO-8859-1
+