diff --git a/doc/conf.py b/doc/conf.py
index 3b4598c..f87734c 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -67,7 +67,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -88,7 +88,6 @@
 try:
     import sphinx_rtd_theme
     html_theme = 'sphinx_rtd_theme'
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 except ImportError:
     html_theme = 'classic'
 
@@ -162,6 +161,6 @@
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/3/': None}
+intersphinx_mapping = {'python': ('https://docs.python.org/3/', None) }
 
 autoclass_content = 'both'