diff --git a/lib/csp.js b/lib/csp.js
index cef2e2f6..8a4aa088 100644
--- a/lib/csp.js
+++ b/lib/csp.js
@@ -11,6 +11,7 @@ var defaultDirectives = {
   styleSrc: ['\'self\'', '\'unsafe-inline\'', 'https://assets-cdn.github.com'], // unsafe-inline is required for some libs, plus used in views
   fontSrc: ['\'self\'', 'https://public.slidesharecdn.com'],
   objectSrc: ['*'], // Chrome PDF viewer treats PDFs as objects :/
+  mediaSrc: ['*'],
   childSrc: ['*'],
   connectSrc: ['*']
 }