diff --git a/summary/summary.py b/summary/summary.py
index 500e6ec..a3af2da 100644
--- a/summary/summary.py
+++ b/summary/summary.py
@@ -11,11 +11,11 @@ import types
 from pelican import signals
 
 def initialized(pelican):
-    from pelican.settings import _DEFAULT_CONFIG
-    _DEFAULT_CONFIG.setdefault('SUMMARY_BEGIN_MARKER',
-                               '<!-- PELICAN_BEGIN_SUMMARY -->')
-    _DEFAULT_CONFIG.setdefault('SUMMARY_END_MARKER',
-                               '<!-- PELICAN_END_SUMMARY -->')
+    from pelican.settings import DEFAULT_CONFIG
+    DEFAULT_CONFIG.setdefault('SUMMARY_BEGIN_MARKER',
+                              '<!-- PELICAN_BEGIN_SUMMARY -->')
+    DEFAULT_CONFIG.setdefault('SUMMARY_END_MARKER',
+                              '<!-- PELICAN_END_SUMMARY -->')
     if pelican:
         pelican.settings.setdefault('SUMMARY_BEGIN_MARKER',
                                     '<!-- PELICAN_BEGIN_SUMMARY -->')