diff --git a/src/Umbraco.Web.UI/web.Template.config b/src/Umbraco.Web.UI/web.Template.config
index 090818f2d6..d21510774d 100644
--- a/src/Umbraco.Web.UI/web.Template.config
+++ b/src/Umbraco.Web.UI/web.Template.config
@@ -195,6 +195,8 @@
       <mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
       <remove fileExtension=".woff"/>
       <mimeMap fileExtension=".woff" mimeType="application/x-font-woff" />
+      <remove fileExtension=".less" />
+      <mimeMap fileExtension=".less" mimeType="text/css" />
     </staticContent>
 
     <!-- Ensure the powered by header is not returned -->