diff --git a/src/components/com_schuweb_sitemap/src/Model/SitemapModel.php b/src/components/com_schuweb_sitemap/src/Model/SitemapModel.php
index 4515e47..c584b51 100644
--- a/src/components/com_schuweb_sitemap/src/Model/SitemapModel.php
+++ b/src/components/com_schuweb_sitemap/src/Model/SitemapModel.php
@@ -263,7 +263,7 @@ private function removingDuplicates(&$nodes, &$links = array(), &$mlinks = array
                 if (empty($mlinks[$option][$view][$id])) {
                     $mlinks[$option][$view][$id] = true;
                 } else {
-                    if (!isset($node->subnodes) && empty((array) ($node->subnodes))) {
+                    if (!isset($node->subnodes) || empty((array) ($node->subnodes))) {
                         unset($nodes->$key);
                     }
                 }