diff --git a/src/plugin_manager.py b/src/plugin_manager.py
index fc8de462..af87a23b 100644
--- a/src/plugin_manager.py
+++ b/src/plugin_manager.py
@@ -344,7 +344,7 @@ class PluginManager(object):
                 os.makedirs(self.plugins_conf_dir)
             except OSError:
                 log.error('Unable to create the plugin conf dir: %s',
-                        plugins_conf_dir, exc_info=True)
+                        self.plugins_conf_dir, exc_info=True)
                 return False
         return True