diff --git a/l2ork_addons/tar_em_up.sh b/l2ork_addons/tar_em_up.sh
index f7b9032dd01cda4b295dd7aae21c69daa4409519..5f8378629d527fd449ad9bf5cc3066cd3505d285 100755
--- a/l2ork_addons/tar_em_up.sh
+++ b/l2ork_addons/tar_em_up.sh
@@ -19,6 +19,11 @@ then
 	echo "     -r    build a Raspberry Pi deb (incremental)"
 	echo "     -w    install custom version of cwiid system-wide"
 	echo
+	echo "   For custom install locations do the following before"
+	echo "   running this script:"
+	echo
+	echo "           export inst_dir=/some/custom/location"
+	echo
 	exit 1
 fi