diff --git a/html/ops/show_log.php b/html/ops/show_log.php
index 8a85e5decb..0e987b4276 100644
--- a/html/ops/show_log.php
+++ b/html/ops/show_log.php
@@ -11,7 +11,10 @@
         exit("Error: couldn't get log_dir from config file.");
     }
 
-    if (!$f || !preg_match("/^ *([a-z_*]+[.]out *)+$/", $f)) {
+    $f = $_GET["f"];
+    $s = $_GET["s"];
+
+    if (!$f || !preg_match("/^ *([a-z_*]+[.](log|out) *)+$/", $f)) {
         $f = '*.log';
     }