diff --git a/www/robots.txt b/www/robots.txt
index bc1164092c..e65975c459 100644
--- a/www/robots.txt
+++ b/www/robots.txt
@@ -1,3 +1,2 @@
-User-agent: *
-Allow: /
-
+User-agent: Googlebot
+Disallow: /*.pdf$