diff --git a/app/assets/stylesheets/common/base/topic-post.scss b/app/assets/stylesheets/common/base/topic-post.scss
index fc931a22cdb..7ac426abb83 100644
--- a/app/assets/stylesheets/common/base/topic-post.scss
+++ b/app/assets/stylesheets/common/base/topic-post.scss
@@ -156,9 +156,6 @@ aside.quote {
     background-color: dark-light-diff($tertiary, $secondary, 85%, -65%);
   }
 }
-.wiki .topic-body {
-  background-color: dark-light-diff($wiki, $secondary, 95%, -50%);
-}
 
 // this ensures consistent top margin on topic posts even if the first line of a post
 // is a top-margin-less element like a list or image.