diff --git a/application/Espo/EntryPoints/Portal.php b/application/Espo/EntryPoints/Portal.php
index 66ed90671e..91a188322e 100644
--- a/application/Espo/EntryPoints/Portal.php
+++ b/application/Espo/EntryPoints/Portal.php
@@ -44,7 +44,9 @@ class Portal extends \Espo\Core\EntryPoints\Base
         } else if (!empty($data['id'])) {
             $id = $data['id'];
         } else {
-            $id = explode('/', $_SERVER['REQUEST_URI'])[count(explode('/', $_SERVER['SCRIPT_NAME'])) - 1];
+            $url = !empty($_SERVER['REDIRECT_URL']) ? $_SERVER['REDIRECT_URL'] : $_SERVER['REQUEST_URI'];
+
+            $id = explode('/', $url)[count(explode('/', $_SERVER['SCRIPT_NAME'])) - 1];
             if (!$id) {
                 $id = $this->getConfig()->get('defaultPortalId');
             }
diff --git a/portal/index.php b/portal/index.php
index da5b83cfb3..f3d606aa52 100644
--- a/portal/index.php
+++ b/portal/index.php
@@ -34,7 +34,9 @@ if (!$app->isInstalled()) {
     exit;
 }
 
-$a = explode('?', $_SERVER['REQUEST_URI']);
+$url = !empty($_SERVER['REDIRECT_URL']) ? $_SERVER['REDIRECT_URL'] : $_SERVER['REQUEST_URI'];
+
+$a = explode('?', $url);
 if (substr($a[0], -1) !== '/') {
     $url = $a[0] . '/';
     if (count($a) > 1) {
@@ -44,7 +46,7 @@ if (substr($a[0], -1) !== '/') {
     exit();
 }
 
-$portalId = explode('/', $_SERVER['REQUEST_URI'])[count(explode('/', $_SERVER['SCRIPT_NAME'])) - 1];
+$portalId = explode('/', $url)[count(explode('/', $_SERVER['SCRIPT_NAME'])) - 1];
 if ($portalId) {
     $app->setBasePath('../../');
 } else {