diff --git a/pages/UI.php b/pages/UI.php
index 0c1beb251d..3b77f4ce71 100644
--- a/pages/UI.php
+++ b/pages/UI.php
@@ -7,7 +7,25 @@ require_once('../application/startup.inc.php');
 
 $oContext = new UserContext();
 $oAppContext = new ApplicationContext();
-$iActiveNodeId = utils::ReadParam('menu', 1);
+$iActiveNodeId = utils::ReadParam('menu', '');
+if (empty($iActiveNodeId))
+{
+	// No menu specified, let's get the default one:
+	// 1) It's a root menu item (parent_id == 0)
+	// 2) with the lowest rank
+	$oFilter = DBObjectSearch::FromOQL('SELECT menuNode AS M WHERE M.parent_id = 0');
+	if ($oFilter)
+	{
+		$oMenuSet = new CMDBObjectSet($oFilter);
+		while($oMenu = $oMenuSet->Fetch())
+		{
+			$aRanks[$oMenu->GetKey()] = $oMenu->Get('rank');
+		}
+		asort($aRanks); // sort by ascending rank: menuId => rank
+		$aKeys = array_keys($aRanks);
+		$iActiveNodeId = array_shift($aKeys); // Takes the first key, i.e. the menuId with the lowest rank
+	}
+}
 $currentOrganization = utils::ReadParam('org_id', '');
 $operation = utils::ReadParam('operation', '');