diff --git a/config.guess b/config.guess
index 69ed3e573bb3f..a3b6423cff4cd 100755
--- a/config.guess
+++ b/config.guess
@@ -1347,6 +1347,9 @@ EOF
     NSX-?:NONSTOP_KERNEL:*:*)
 	echo nsx-tandem-nsk${UNAME_RELEASE}
 	exit ;;
+    NSV-?:NONSTOP_KERNEL:*:*)
+	echo nsv-tandem-nsk${UNAME_RELEASE}
+	exit ;;
     *:NonStop-UX:*:*)
 	echo mips-compaq-nonstopux
 	exit ;;
diff --git a/config.sub b/config.sub
index 62b82599d986f..4e0695476a03d 100755
--- a/config.sub
+++ b/config.sub
@@ -945,6 +945,12 @@ case $basic_machine in
 	nse-tandem)
 		basic_machine=nse-tandem
 		;;
+	nsx-tandem)
+		basic_machine=nsx-tandem
+		;;
+	nsv-tandem)
+		basic_machine=nsv-tandem
+		;;
 	nsr-tandem)
 		basic_machine=nsr-tandem
 		;;