diff --git a/module/execution/control.php b/module/execution/control.php
index 49d60b863f..4f3995c7cd 100644
--- a/module/execution/control.php
+++ b/module/execution/control.php
@@ -207,6 +207,7 @@ class execution extends control
         $this->view->moduleTree  = $this->tree->getTaskTreeMenu($executionID, (int)$productID, 0, array('treeModel', 'createTaskLink'), $showAllModule);
         $this->view->memberPairs = $memberPairs;
         $this->view->execution   = $execution;
+        $this->view->productID   = $productID;
         $this->view->users       = $this->loadModel('user')->getPairs('noletter');
         $this->view->features    = $this->execution->getExecutionFeatures($execution);
 
diff --git a/module/execution/ui/task.html.php b/module/execution/ui/task.html.php
index 1b903f2bdb..b359cd1f37 100644
--- a/module/execution/ui/task.html.php
+++ b/module/execution/ui/task.html.php
@@ -128,12 +128,13 @@ toolbar
 );
 
 /* zin: Define the sidebar in main content. */
+$activeKey = $browseType == 'byproduct' ? $productID : $moduleID;
 sidebar
 (
     moduleMenu
     (
         set::modules($moduleTree),
-        set::activeKey($moduleID),
+        set::activeKey($activeKey),
         set::settingLink(createLink('tree', 'browsetask', "rootID=$execution->id&productID=0")),
         set::settingApp($execution->multiple ? 'execution' : 'project'),
         set::closeLink(createLink('execution', 'task', "executionID={$executionID}")),