diff --git a/cookiecutter-django-app/{{cookiecutter.repo_name}}/docs/conf.py b/cookiecutter-django-app/{{cookiecutter.repo_name}}/docs/conf.py
index 1b816d4a..d0df9469 100644
--- a/cookiecutter-django-app/{{cookiecutter.repo_name}}/docs/conf.py
+++ b/cookiecutter-django-app/{{cookiecutter.repo_name}}/docs/conf.py
@@ -109,7 +109,7 @@ def get_version(*file_paths):
 #
 # 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'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
diff --git a/python-template/{{cookiecutter.placeholder_repo_name}}/docs/conf.py b/python-template/{{cookiecutter.placeholder_repo_name}}/docs/conf.py
index 3262a203..c6e63b0b 100644
--- a/python-template/{{cookiecutter.placeholder_repo_name}}/docs/conf.py
+++ b/python-template/{{cookiecutter.placeholder_repo_name}}/docs/conf.py
@@ -119,7 +119,7 @@ def get_version(*file_paths):
 #
 # 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'
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used: