diff --git a/src/java.desktop/aix/data/fontconfig/fontconfig.properties b/src/java.desktop/aix/data/fontconfig/fontconfig.properties
index def633f98a4..dc3bfcac2fb 100644
--- a/src/java.desktop/aix/data/fontconfig/fontconfig.properties
+++ b/src/java.desktop/aix/data/fontconfig/fontconfig.properties
@@ -1,6 +1,6 @@
 #
 #
-# Copyright (c) 2013, 2019 SAP SE. All rights reserved.
+# Copyright (c) 2013, 2023 SAP SE. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -307,6 +307,8 @@ monospaced.bolditalic.taiwanese-iso10646=-monotype-wt sans duo tw-medium-r-norma
 
 sequence.allfonts=latin-1
 sequence.allfonts.UTF-8=latin-1,japanese-iso10646
+# C and POSIX locale
+sequence.allfonts.UTF-8.en.=latin-1
 # Uk_UA
 sequence.allfonts.x-IBM1124=latin-1,ukranian-ibm1124
 # Japanese
@@ -314,12 +316,12 @@ sequence.allfonts.x-IBM943C=latin-1,japanese-x0201,japanese-x0208,japanese-udc
 sequence.allfonts.x-IBM29626C=latin-1,japanese-x0201,japanese-x0208,japanese-udc
 sequence.allfonts.UTF-8.ja=japanese-iso10646,latin-1,iso10646-extB
 # Chinese
-sequence.allfonts.x-EUC_CN=latin-1,chinese
+sequence.allfonts.x-IBM1383=latin-1,chinese
 sequence.allfonts.GB18030=latin-1,chinese-iso10646,iso10646-extB
 sequence.allfonts.UTF-8.zh.CN=latin-1,chinese-iso10646,iso10646-extB
 # Taiwanese
 sequence.allfonts.x-IBM964=latin-1,taiwanese-iso10646
-sequence.allfonts.Big5=latin-1,taiwanese-iso10646
+sequence.allfonts.x-IBM950=latin-1,taiwanese-iso10646
 sequence.allfonts.UTF-8.zh.TW=latin-1,taiwanese-iso10646
 # Korean
 sequence.allfonts.x-IBM970=latin-1,korean