diff --git a/handlers/outline.go b/handlers/outline.go
index d96dd78..2960bd0 100644
--- a/handlers/outline.go
+++ b/handlers/outline.go
@@ -20,7 +20,7 @@ func NewOutlineHandler(path string, opts *ProxyOptions) fiber.Handler {
 				rx.SpoofReferrerFromGoogleSearch(),
 			).
 			AddResponseModifications(
-				tx.ForwardResponseHeaders(),
+				tx.SetResponseHeader("content-type", "text/html"),
 				tx.DeleteIncomingCookies(),
 				tx.RewriteHTMLResourceURLs(),
 				tx.GenerateReadableOutline(), // <-- this response modification does the outline rendering