diff --git a/www/performance_optimization.php b/www/performance_optimization.php
index 6bf15c2862..b63e988e66 100644
--- a/www/performance_optimization.php
+++ b/www/performance_optimization.php
@@ -28,7 +28,7 @@
     <body class="result">
             <?php
             $tab = 'Test Result';
-            $subtab = 'Performance';
+            $subtab = 'Optimization';
             include 'header.inc';
 
             
