diff --git a/BTCPayServer/Storage/StorageExtensions.cs b/BTCPayServer/Storage/StorageExtensions.cs
index bfc8b14360..cb91b93c2d 100644
--- a/BTCPayServer/Storage/StorageExtensions.cs
+++ b/BTCPayServer/Storage/StorageExtensions.cs
@@ -75,6 +75,7 @@ private static Action<StaticFileResponseContext> HandleStaticFileResponse()
                 {
                     context.Context.Response.Headers["Content-Disposition"] = "attachment";
                 }
+                context.Context.Response.Headers["Content-Security-Policy"] = "script-src 'self'";
             };
         }
     }