diff --git a/ChangeLog b/ChangeLog
index d9bad5432a8..6fb6b274e9b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 Tue Dec 10 00:04:35 1991  K. Richard Pixley  (rich at rtl.cygnus.com)
 
+	* configure.in: add decstation host makefile frag.
+
 	* Makefile.in: BISON now bison -y again.
 
 Mon Dec  9 16:48:33 1991  K. Richard Pixley  (rich at rtl.cygnus.com)
diff --git a/configure.in b/configure.in
index e81b524bafe..4a8f850cf1a 100644
--- a/configure.in
+++ b/configure.in
@@ -15,6 +15,7 @@ case "${host_os}" in
 m88kbcs)	host_makefile_frag=config/mh-delta88;;
 sysv* | irix*)	host_makefile_frag=config/mh-sysv ;;
 svr4)		host_makefile_frag=config/mh-svr4 ;;
+ultrix)		host_makefile_frag=config/mh-decstation ;;
 esac
 
 case "${host_vendor}" in