diff --git a/lib/libsmutil/Makefile b/lib/libsmutil/Makefile
index e1d908e9fea..ff3f8491225 100644
--- a/lib/libsmutil/Makefile
+++ b/lib/libsmutil/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PACKAGE=lib${LIB}
-SENDMAIL_DIR=${.CURDIR}/../../contrib/sendmail
+SENDMAIL_DIR=${SRCTOP}/contrib/sendmail
 .PATH:	${SENDMAIL_DIR}/libsmutil
 
 CFLAGS+=-I${SENDMAIL_DIR}/src -I${SENDMAIL_DIR}/include -I.