diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 6f59993..1948964 100644
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -267,7 +267,7 @@ docker_temp_server_start() {
 
 	# internal start of server in order to allow setup using psql client
 	# does not listen on external TCP/IP and waits until start finishes
-	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5433}"
 
 	PGUSER="${PGUSER:-$POSTGRES_USER}" \
 	pg_ctl -D "$PGDATA" \