diff --git a/usr.sbin/mpsutil/Makefile b/usr.sbin/mpsutil/Makefile
index 59b97a90904c..c731f6df260e 100644
--- a/usr.sbin/mpsutil/Makefile
+++ b/usr.sbin/mpsutil/Makefile
@@ -9,7 +9,7 @@ WARNS?= 3
 
 LIBADD=	cam util
 
-CFLAGS+= -I../../sys -I. -DUSE_MPT_IOCTLS -g
+CFLAGS+= -I${.CURDIR}/../../sys -I. -DUSE_MPT_IOCTLS -g
 
 
 # Here be dragons