gistfile1.txt

diff --git src/share/poudriere/testport.sh src/share/poudriere/testport.sh
index d8f0124da..d04f8c48b 100755
--- src/share/poudriere/testport.sh
+++ src/share/poudriere/testport.sh
@@ -217,11 +217,11 @@ if [ $CONFIGSTR -eq 1 ]; then
 	command -v dialog4ports >/dev/null 2>&1 || err 1 "You must have ports-mgmt/dialog4ports installed on the host to use -c."
 	__MAKE_CONF=$(mktemp -t poudriere-make.conf)
 	setup_makeconf "${__MAKE_CONF}" "${JAILNAME}" "${PTNAME}" "${SETNAME}"
-	PORTSDIR=${portsdir} \
+	PORTSDIR="${MASTERMNT}${portsdir}" \
 	    __MAKE_CONF="${__MAKE_CONF}" \
 	    PORT_DBDIR=${MASTERMNT}/var/db/ports \
 	    TERM=${SAVED_TERM} \
-	    make -C ${portdir} \
+	    make -C "${MASTERMNT}${portdir}" \
 	    ${FLAVOR:+FLAVOR=${FLAVOR}} \
 	    config
 	rm -f "${__MAKE_CONF}"