diff --git a/ChangeLog b/ChangeLog
index a5f493bd..b6242f72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,8 @@
 	* config.guess: Synchronise with master FSF version. Add detection
 	for HP MPE/iX.
 
+	* config.sub: Likewise.
+
 1999-01-23  Ben Elliston  <bje@cygnus.com>
 
 	* config.guess: Catch more NILE system models. Contributed by
diff --git a/config.sub b/config.sub
index da8b7ae6..65129c76 100755
--- a/config.sub
+++ b/config.sub
@@ -345,6 +345,10 @@ case $basic_machine in
 	hppa-next)
 		os=-nextstep3
 		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		os=-mpeix
+		;;
 	i370-ibm* | ibm*)
 		basic_machine=i370-ibm
 		os=-mvs
@@ -715,7 +719,7 @@ case $os in
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
 	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -linux-gnu* | -uxpv* | -beos* | -rhapsody* \
-	      | -openstep*)
+	      | -openstep* | -mpeix*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
 	-linux*)
@@ -921,6 +925,9 @@ case $basic_machine in
 			-hpux*)
 				vendor=hp
 				;;
+			-mpeix*)
+				vendor=hp
+				;;
 			-hiux*)
 				vendor=hitachi
 				;;