diff --git a/postgresqld.sh b/postgresqld.sh
index bc48997..5577f24 100755
--- a/postgresqld.sh
+++ b/postgresqld.sh
@@ -1,11 +1,13 @@
 #!/bin/sh
 set -e
 
+user=postgres
+
 case $1 in
   stop)
-    su postgres -c "pg_ctl stop -D ${PGDATA}" ;;
+    su ${user} -c "pg_ctl stop -D ${PGDATA}" ;;
   reload)
-    su postgres -c "pg_ctl reload -D ${PGDATA}" ;;
+    su ${user} -c "pg_ctl reload -D ${PGDATA}" ;;
   *)
     pid=/run/postgresql.pid
 
@@ -13,12 +15,12 @@ case $1 in
     chown -R ${user}:${user} ${PGBASE}
 
     if test ! -f ${PGDATA}/PG_VERSION ; then
-      su postgres -c "/usr/bin/initdb -D ${PGDATA}"
+      su ${user} -c "/usr/bin/initdb -D ${PGDATA}"
 
       echo "include_dir = '/etc/postgres.d'" >> ${PGDATA}/postgresql.conf
     fi
 
     rm -f ${pid}
-    daemonize -u postgres -c ${PGDATA} /usr/bin/postgres
+    daemonize -u ${user} -c ${PGDATA} /usr/bin/postgres
     ;;
 esac