diff --git a/lib/downloader.php b/lib/downloader.php
index dc89f6497..db9db6f98 100644
--- a/lib/downloader.php
+++ b/lib/downloader.php
@@ -351,6 +351,7 @@ private function run_output_ranges() {
             self::emit_header("Content-Type: {$this->mimetype}");
             self::emit_header("Content-Length: {$clen}");
             self::emit_header("Accept-Ranges: bytes");
+            $this->emit_main_headers();
             return;
         } else if (!isset($range)) {
             $outsize = $clen;