diff --git a/prometheusd.sh b/prometheusd.sh
index ff8e549..6fee544 100755
--- a/prometheusd.sh
+++ b/prometheusd.sh
@@ -14,8 +14,8 @@ case $1 in
   start)
     rm -f "${pid}"
 
-    chown prometheus:prometheus /var/lib/prometheus/data
-    chmod -R u=rwX,g=rX,o= /var/lib/prometheus
+    chown prometheus:prometheus "${var}"
+    chmod -R u=rwX,g=rX,o= "${var}"
 
     daemonize -p "${pid}" -l "${pid}" -u prometheus -c "${var}" \
       /usr/bin/prometheus --config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path="${var}/data"