diff --git a/bookface_dark.css b/bookface_dark.css
index 835e8b0..4eb88e3 100644
--- a/bookface_dark.css
+++ b/bookface_dark.css
@@ -12,10 +12,8 @@
     --link-color: $link_color;
     --nav-icon-color: $nav_icon_color;
     --background-color: $background_color;
-    --contentbg-transp: $contentbg_transp;
     --font-color: $font_color;
     --font-color-darker: $font_color_darker;
-    --background-image: $background_image;
     --menu-background-hover-color: $menu_background_hover_color;
     --border-color: #333333;
     --count-color:  #ffffff;