diff --git a/share/config.yml b/share/config.yml
index 9c75059f..026a0792 100644
--- a/share/config.yml
+++ b/share/config.yml
@@ -534,5 +534,5 @@ route_cache: true
 appname: 'Netdisco'
 behind_proxy: false
 HTTP-Header-X-Frame-Options: 'DENY'
-HTTP-Header-Content-Security-Policy: 'none'
+HTTP-Header-Content-Security-Policy: 'frame-ancestors none;'