diff --git a/usr/local/www/diag_logs.php b/usr/local/www/diag_logs.php
index 502833a142..33d8a21508 100755
--- a/usr/local/www/diag_logs.php
+++ b/usr/local/www/diag_logs.php
@@ -52,7 +52,7 @@ if ($_POST['filtertext'])
 	$filtertext = $_POST['filtertext'];
 
 if ($filtertext)
-	$filtertextmeta="&filtertext=$filtertext";
+	$filtertextmeta="?filtertext=$filtertext";
 
 $pgtitle = "Diagnostics: System logs: System";
 include("head.inc");
@@ -113,6 +113,6 @@ include("head.inc");
 	</tr>
 </table>
 <?php include("fend.inc"); ?>
-<meta http-equiv="refresh" content="60;url=<?php print $_SERVER['PHP_SELF']; ?><?=$filtertextmeta?>">
+<meta http-equiv="refresh" content="60;url=<?php print $_SERVER['SCRIPT_NAME']; ?><?=$filtertextmeta?>">
 </body>
 </html>