From eae0b3ada8b589291cd2b3a86a3c0577a668604c 2013-06-26 21:56:18
From: Paul Ivanov <pivanov314@gmail.com>
Date: 2013-06-26 21:56:18
Subject: [PATCH] Merge pull request #3463 from ivanov/fix-3462

fix typo, closes #3462

Thanks to github user @gaulinmp for submitting a bug report and the
suggested fix.
---

diff --git a/IPython/config/application.py b/IPython/config/application.py
index 32bde86..4a2923e 100644
--- a/IPython/config/application.py
+++ b/IPython/config/application.py
@@ -165,7 +165,7 @@ class Application(SingletonConfigurable):
     def _log_format_changed(self, name, old, new):
         """Change the log formatter when log_format is set."""
         _log_handler = self.log.handlers[0]
-        _log_formatter = LevelFormatter(new, datefmt=self._log_datefmt)
+        _log_formatter = LevelFormatter(new, datefmt=self.log_datefmt)
         _log_handler.setFormatter(_log_formatter)
 
     log = Instance(logging.Logger)