diff --git a/admin_manual/conf.py b/admin_manual/conf.py
index 4926e8bc5..6de51487e 100644
--- a/admin_manual/conf.py
+++ b/admin_manual/conf.py
@@ -99,7 +99,7 @@ html_theme_path = ['../_shared_assets/themes']
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'bootstrap'
+html_theme = 'owncloud'
 html_theme_options = {
 #    "rightsidebar": "true",
 }
diff --git a/user_manual/conf.py b/user_manual/conf.py
index e02419f0e..6080eb39f 100644
--- a/user_manual/conf.py
+++ b/user_manual/conf.py
@@ -99,7 +99,7 @@ html_theme_path = ['../_shared_assets/themes']
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'bootstrap'
+html_theme = 'owncloud'
 html_theme_options = {
 #    "rightsidebar": "true",
 }