diff --git a/config.guess b/config.guess
index 70bb0f3ad..6b2fe5b64 100755
--- a/config.guess
+++ b/config.guess
@@ -567,7 +567,7 @@ main ()
 #endif
   int version;
   version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  printf ("%s-next-nextstep%s\n", __ARCHITECTURE__, version);
+  printf ("%s-next-nextstep%s\n", __ARCHITECTURE__, version==2 ? "2" : "3");
   exit (0);
 #endif