diff --git a/doc/conf.py b/doc/conf.py
index d6b8bda898728c823fa79b702b8f871b359bfd26..9adbd254e19ec07426afc59813b4642848c1979e 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -29,7 +29,6 @@ pygments_style = 'tango'
 
 # -- Options for HTML output ----------------------------------------------
 
-html_theme = 'alabaster'
 htmlhelp_basename = 'Haddockdoc'