diff --git a/lib/libmp/Makefile b/lib/libmp/Makefile
index 8d8c5278e573..16f96abaa030 100644
--- a/lib/libmp/Makefile
+++ b/lib/libmp/Makefile
@@ -10,9 +10,9 @@ MAN=		libmp.3
 INCS=		mp.h
 SRCS=		mpasbn.c
 
-CFLAGS+=	-I${.CURDIR}/../../crypto
+CFLAGS+=	-I${SRCTOP}/crypto
 
-VERSION_DEF=	${.CURDIR}/../libc/Versions.def
+VERSION_DEF=	${SRCTOP}/lib/libc/Versions.def
 SYMBOL_MAPS=	${.CURDIR}/Symbol.map
 
 .if ${MK_TESTS} != "no"