diff --git a/netoik-db.spec b/netoik-db.spec
index a58522c..8a1306a 100644
--- a/netoik-db.spec
+++ b/netoik-db.spec
@@ -26,7 +26,7 @@ Install the database management system called postgresql with a predefined confi
 chown postgres:postgres "%{_rundir}/postgresql"
 
 # Init cluster if necessary
-runuser --user=postgres -- if [ ! -d $PGDATA ]; then postgresql-setup --initdb; fi
+runuser --user=postgres -- if [ ! -f $PGDATA/PG_VERSION ]; then postgresql-setup --initdb; fi
 
 # Restart services
 systemctl daemon-reload