If you are seeing this, django-softdelete's base.html template is being found by the template renderer before your site's base.html. You should place the app that has the desired base.html earlier in the INSTALLED_APPS into settings.py.

You could also replace base.html in the <path-to-django-softdelete>/key/templates/base.html with other content. {%block content%} {%endblock%}