diff --git a/main/inc/lib/multibyte_string_functions.lib.php b/main/inc/lib/multibyte_string_functions.lib.php
index e2a5eecb23..2376daa5dc 100644
--- a/main/inc/lib/multibyte_string_functions.lib.php
+++ b/main/inc/lib/multibyte_string_functions.lib.php
@@ -1043,7 +1043,7 @@ hebrew: ISO-8859-8, WINDOWS-1255;
 hungarian: WINDOWS-1250, ISO-8859-2;
 indonesian: ISO-8859-15, WINDOWS-1252, ISO-8859-1;
 italian: ISO-8859-15, WINDOWS-1252, ISO-8859-1;
-japanese: EUC-JP, ISO-2022-JP, Shift-JIS, SJIS-2004;
+japanese: EUC-JP, ISO-2022-JP, Shift-JIS;
 korean: EUC-KR, ISO-2022-KR, CP949;
 latvian: WINDOWS-1257, ISO-8859-13;
 lithuanian: WINDOWS-1257, ISO-8859-13;
@@ -1069,7 +1069,7 @@ thai: WINDOWS-874, ISO-8859-11;
 trad_chinese: BIG-5, EUC-TW;
 turkce: WINDOWS-1254, ISO-8859-9;
 ukrainian: KOI8-U;
-vietnamese: WINDOWS-1258, VISCII, VPS, VIQR, TCVN, VNI;
+vietnamese: WINDOWS-1258, VISCII, TCVN;
 yoruba: ISO-8859-15, WINDOWS-1252, ISO-8859-1;
 ';