diff --git a/gp-scripts/README.md b/gp-scripts/README.md
new file mode 100644
index 0000000..947467e
--- /dev/null
+++ b/gp-scripts/README.md
@@ -0,0 +1,10 @@
+# brick-do.sh
+Script to run commands on the single bricks of a GlusterFS volume.
+e.g.
+
+    brick-do.sh -v ge-pacs -c "sudo ls -alh" -p "/ge-pacs/data"
+
+
+# checkup.sh
+Run a quick test on the cluster and do some sanity checks. Most checks are intended to be reviewed by a human being.
+
diff --git a/gp-scripts/checkup.sh b/gp-scripts/checkup.sh
index cff33b6..b63db46 100644
--- a/gp-scripts/checkup.sh
+++ b/gp-scripts/checkup.sh
@@ -27,9 +27,9 @@ ${ANSIBLE_CMD} -b all -m shell \
     -a 'for zone in external interconnect client; do
           echo "### ${zone} ###"
           echo -n "running:   "
-          firewall-cmd --zone=external --list-interfaces
+          firewall-cmd --zone="${zone}" --list-interfaces
           echo -n "permanent: "
-          firewall-cmd --permanent --zone=external --list-interfaces
+          firewall-cmd --permanent --zone="${zone}" --list-interfaces
           echo ""
         done'