diff --git a/scripts/dronebl/dronebl_submitter.py b/scripts/dronebl/dronebl_submitter.py
index bc1f1de..4b7239c 100644
--- a/scripts/dronebl/dronebl_submitter.py
+++ b/scripts/dronebl/dronebl_submitter.py
@@ -30,8 +30,8 @@ class DroneBL(object):
 		with self.conn:
 			with self.conn.cursor() as curs:
 				curs.execute(f"""select ip, exit_ip, proxy_type from proxies
-					where ip not in (select ip from dronebl) and
-					exit_ip not in (select ip from dronebl) and
+					where not exists (select ip from dronebl WHERE  ip = proxies.ip) and
+					not exists (select ip from dronebl WHERE  ip = proxies.exit_ip) and
 					status='active' limit 200""")
 				new_proxies = curs.fetchall()
 				proxies_to_test = []