diff --git a/helpers/postgresql.py b/helpers/postgresql.py
index 6348c3ff..a5ae8b36 100644
--- a/helpers/postgresql.py
+++ b/helpers/postgresql.py
@@ -44,7 +44,7 @@ class Postgresql:
         self.replication = config['replication']
         self.superuser = config['superuser']
         self.admin = config['admin']
-        self.callback = config.get('callback', {})
+        self.callback = config.get('callbacks', {})
         self.recovery_conf = os.path.join(self.data_dir, 'recovery.conf')
         self.configuration_to_save = (os.path.join(self.data_dir, 'pg_hba.conf'),
                                       os.path.join(self.data_dir, 'postgresql.conf'))