diff --git a/platypush/config/__init__.py b/platypush/config/__init__.py
index c205403f..cc2cede9 100644
--- a/platypush/config/__init__.py
+++ b/platypush/config/__init__.py
@@ -67,7 +67,7 @@ class Config(object):
             self._config['workdir'] = self._workdir_location
         os.makedirs(self._config['workdir'], exist_ok=True)
 
-        self._config['db'] = self._config.get('main_db', {
+        self._config['db'] = self._config.get('main.db', {
             'engine': 'sqlite:///' + os.path.join(
                 os.environ['HOME'], '.local', 'share', 'platypush', 'main.db')
         })