Index: usr.sbin/freebsd-update/freebsd-update.sh
===================================================================
--- usr.sbin/freebsd-update/freebsd-update.sh
+++ usr.sbin/freebsd-update/freebsd-update.sh
@@ -219,9 +219,16 @@
 
 # Add to the list of components which should be kept updated.
 config_Components () {
+	_SRC_COMPONENT_DIR = "/usr/src"
+
+	# Use the base dir if it has been set.
+	if ! [ -z ${BASEDIR} ]; then
+		_SRC_COMPONENT_DIR = "${BASEDIR}/${_SRC_COMPONENT_DIR}"
+	fi
+
 	for C in $@; do
 		if [ "$C" = "src" ]; then
-			if [ -e /usr/src/COPYRIGHT ]; then
+			if [ -e "${_SRC_COMPONENT_DIR}/COPYRIGHT" ]; then
 				COMPONENTS="${COMPONENTS} ${C}"
 			else
 				echo "src component not installed, skipped"