diff --git a/services b/services
index 234fdb1..b2f96e3 100755
--- a/services
+++ b/services
@@ -187,11 +187,9 @@ addIoTDatabaseIndex () {
 	conn = new Mongo();
 	db = conn.getDB("iotagentjson");
 	db.getCollectionNames().forEach(c=>db[c].drop());
-	db.createCollection("devices");
 	db.devices.createIndex({"_id.service": 1, "_id.id": 1, "_id.type": 1});
 	db.devices.createIndex({"_id.type": 1});
 	db.devices.createIndex({"_id.id": 1});
-	db.createCollection("groups");
 	db.groups.createIndex({"_id.resource": 1, "_id.apikey": 1, "_id.service": 1});
 	db.groups.createIndex({"_id.type": 1});' > /dev/null
 	echo -e " \033[1;32mdone\033[0m"