diff --git a/lib/libsmdb/Makefile b/lib/libsmdb/Makefile
index 3fbd11648869..b1957b9c2149 100644
--- a/lib/libsmdb/Makefile
+++ b/lib/libsmdb/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PACKAGE=lib${LIB}
-SENDMAIL_DIR=${.CURDIR}/../../contrib/sendmail
+SENDMAIL_DIR=${SRCTOP}/contrib/sendmail
 .PATH:	${SENDMAIL_DIR}/libsmdb
 
 CFLAGS+=-I${SENDMAIL_DIR}/src -I${SENDMAIL_DIR}/include -I.