diff --git a/encodings/sbcs-data.js b/encodings/sbcs-data.js
index fdb81a39..c2bd3ec3 100644
--- a/encodings/sbcs-data.js
+++ b/encodings/sbcs-data.js
@@ -170,5 +170,8 @@ module.exports = {
 
     "mac": "macintosh",
     "csmacintosh": "macintosh",
+    
+    "iso88598e": "iso88598",
+    "iso88598i": "iso88598",
 };