diff --git a/source/conf.py b/source/conf.py
index d990991a1e6c7ceeb9d08de8078793b24831a5c5..28eccb5aa6bd14eb0820ddffc64145b52b4c6147 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -51,13 +51,9 @@ templates_path = ['_templates']
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 #
-from recommonmark.parser import CommonMarkParser
-source_parsers = {
-    '.md': CommonMarkParser,
-    }
 # source_suffix = ['.rst', '.md']
 # source_suffix = '.rst'
-source_suffix = ['.rst', '.md']
+source_suffix = ['.rst']
 
 # The master toctree document.
 master_doc = 'index'