--- a/doc/conf.py
+++ b/doc/conf.py
@@ -93,6 +93,9 @@ rst_epilog = open('links_names.inc', 'rt
 # for source files.
 exclude_trees = ['_build', 'examples']
 
+# If true, the reST sources are included in the HTML build as _sources/<name>.
+html_copy_source = False
+
 # The reST default role (used for this markup: `text`) to use for all documents.
 #default_role = None
 
