diff --git a/pelican/readers.py b/pelican/readers.py
index 55d5ceaa..c53ff5b1 100644
--- a/pelican/readers.py
+++ b/pelican/readers.py
@@ -128,7 +128,7 @@ class MarkdownReader(Reader):
 
     def read(self, filename):
         """Parse content and metadata of markdown files"""
-        markdown_extensions = self.settings.get('MARKDOWN_EXTENsIONS', [])
+        markdown_extensions = self.settings.get('MARKDOWN_EXTENSIONS', [])
         if isinstance(markdown_extensions, (str, unicode)):
             markdown_extensions = [m.strip() for m in
                                    markdown_extensions.split(',')]
diff --git a/tests/test_readers.py b/tests/test_readers.py
index 38b7197a..406027c1 100644
--- a/tests/test_readers.py
+++ b/tests/test_readers.py
@@ -95,7 +95,7 @@ class MdReaderTest(unittest.TestCase):
     def test_article_with_markdown_markup_extension(self):
         # test to ensure the markdown markup extension is being processed as expected
         reader = readers.MarkdownReader({})
-        reader.settings.update(dict(MARKDOWN_EXTENSIONS=['toc']))
+        reader.settings.update(dict(MARKDOWN_EXTENSIONS=['toc', ]))
         content, metadata = reader.read(_filename('article_with_markdown_markup_extensions.md'))
         expected = '<div class="toc">\n'\
             '<ul>\n'\