diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 1be288a2e4e..aec381d7eea 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,7 @@
 2005-05-27  Lute Kamstra  <lute@gnu.org>
 
+	* textmodes/dns-mode.el (dns-mode): Specify customization group.
+
 	* calc/calc.el (calc): Specify customization group.
 
 	* outline.el (outline-1, outline-2, outline-3, outline-4)
diff --git a/lisp/textmodes/dns-mode.el b/lisp/textmodes/dns-mode.el
index 400f87205c4..ac32eccd9ec 100644
--- a/lisp/textmodes/dns-mode.el
+++ b/lisp/textmodes/dns-mode.el
@@ -48,7 +48,8 @@
 ;;; Code:
 
 (defgroup dns-mode nil
-  "DNS master file mode configuration.")
+  "DNS master file mode configuration."
+  :group 'data)
 
 (defconst dns-mode-classes '("IN" "CS" "CH" "HS")
   "List of strings with known DNS classes.")