diff --git a/tools/tools/ncpus/biosmptable.c b/tools/tools/ncpus/biosmptable.c
index e7bddb7c1052..ee39e3669775 100644
--- a/tools/tools/ncpus/biosmptable.c
+++ b/tools/tools/ncpus/biosmptable.c
@@ -34,7 +34,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
-#include <machine/mptable.h>
+#include <x86/mptable.h>
 
 #include <err.h>
 #include <fcntl.h>