diff --git a/usr/local/www/status_rrd_graph_img.php b/usr/local/www/status_rrd_graph_img.php
index 56dbabed08..cad292f125 100644
--- a/usr/local/www/status_rrd_graph_img.php
+++ b/usr/local/www/status_rrd_graph_img.php
@@ -648,8 +648,6 @@ else
 		header("Cache-Control: post-check=0, pre-check=0", false);
 		header("Pragma: no-cache");
 		$file= "/usr/local/www/themes/{$g['theme']}/images/misc/rrd_error.png";
-		$size= filesize($file);
-		header("Content-Length: $size bytes");
 		readfile($file);
 	} else {
 		$file = "$rrdtmppath$curdatabase-$interval.png";
@@ -660,8 +658,6 @@ else
 			header("Cache-Control: no-store, no-cache, must-revalidate");
 			header("Cache-Control: post-check=0, pre-check=0", false);
 			header("Pragma: no-cache");
-			$size= filesize($file);
-			header("Content-Length: $size bytes");
 			readfile($file);
 		}
 	}