diff --git a/.htaccess b/.htaccess
index 3d06753e9e..10adb902ff 100644
--- a/.htaccess
+++ b/.htaccess
@@ -25,7 +25,7 @@ RewriteRule ^\.well-known/caldav /remote.php/caldav/ [R]
 RewriteRule ^apps/calendar/caldav\.php remote.php/caldav/ [QSA,L]
 RewriteRule ^apps/contacts/carddav\.php remote.php/carddav/ [QSA,L]
 RewriteRule ^remote/(.*) remote.php [QSA,L]
-RewriteRule ^(build|tests|config|lib|l10n|templates)/.* - [R=404,L]
+RewriteRule ^(build|tests|config|lib|3rdparty|templates)/.* - [R=404,L]
 RewriteRule ^(\.|autotest|occ|issue|indie|db_|console).* - [R=404,L]
 </IfModule>
 <IfModule mod_mime.c>