diff --git a/background.html b/background.html
index 995a69aceb01..d773c85b7d12 100644
--- a/background.html
+++ b/background.html
@@ -11,6 +11,7 @@
             child-src 'self';
             connect-src 'self' https: wss:;
             font-src 'self';
+            form-action 'self';
             frame-src 'none';
             img-src 'self' blob: data:;
             media-src 'self' blob:;