diff --git a/mdk.fr.yml b/mdk.fr.yml
index 7582aaf..ee9f429 100644
--- a/mdk.fr.yml
+++ b/mdk.fr.yml
@@ -81,6 +81,11 @@
                   add_header X-Content-Type-Options "nosniff";
               }
 
+              location /dicewars/ {
+                  add_header Content-Security-Policy "frame-ancestors 'none'";
+                  add_header X-Frame-Options "DENY";
+              }
+
               location /photos/ {
                   allow 82.64.237.93;
                   allow 2a01:e0a:15:ac20::/64;