diff --git a/docs/conf/mime.types b/docs/conf/mime.types
index da8cd691879..fc90f39f7b3 100644
--- a/docs/conf/mime.types
+++ b/docs/conf/mime.types
@@ -1429,6 +1429,7 @@ model/x3d+xml					x3d x3dz
 text/cache-manifest				appcache
 text/calendar					ics ifb
 text/css					css
+text/css	        less
 text/csv					csv
 # text/directory
 # text/dns