diff --git a/lisp/international/mule-conf.el b/lisp/international/mule-conf.el
index 6c28e4d1f4c..2a58e7271fa 100644
--- a/lisp/international/mule-conf.el
+++ b/lisp/international/mule-conf.el
@@ -361,6 +361,9 @@
       coding-category-iso-7-else	'iso-2022-7bit-lock
       coding-category-iso-8-else	'iso-2022-8bit-ss2
       coding-category-ccl		nil
+      coding-category-utf-8             nil
+      coding-category-utf-16-be         nil
+      coding-category-utf-16-le         nil
       coding-category-big5		'chinese-big5
       coding-category-raw-text		'raw-text
       coding-category-binary		'no-conversion)
@@ -377,7 +380,10 @@
    coding-category-sjis 
    coding-category-big5
    coding-category-ccl
-   coding-category-binary))
+   coding-category-binary
+   coding-category-utf-16-be
+   coding-category-utf-16-le
+   coding-category-utf-8))
 
 
 ;;; Miscellaneous settings.