1 files changed, 3 insertions, 3 deletions

diff --git a/rrd.php b/rrd.php
index a873bf7..1b5997b 100644
--- a/rrd.php
+++ b/rrd.php
@@ -8,9 +8,9 @@ if ($file = validateRRDPath($CONFIG['datadir'], $_SERVER['PATH_INFO'])) {
         header('Content-Type: application/octet-stream');
         header('Content-Disposition: attachment; filename='.basename($file));
         header("Expires: " .date(DATE_RFC822,strtotime($CONFIG['cache']." seconds")));
-    ob_clean();
-    flush();
-    readfile($file);
+        if(ob_get_length()) ob_clean();
+        flush();
+        readfile($file);
 } else {
         header('HTTP/1.0 403 Forbidden');