diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6250c526..e4ae694e 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -78,7 +78,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-if on_rtd:
+if True:
     html_theme = 'default'
 else:
     html_theme = 'insipid'