diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0bc29d6..3f027fb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ Release notes for the Router Craft CMS plugin.
 
 
 
+## Unreleased
+
+### Fixed
+- Fixed a bug where an element's descendants were incorrectly passed to the `relatedTo` criteria.
+
+
+
 ## 1.4.0 - 2023-02-22
 
 ### Added
diff --git a/src/controllers/DefaultController.php b/src/controllers/DefaultController.php
index 0c10d00..92bcdcc 100644
--- a/src/controllers/DefaultController.php
+++ b/src/controllers/DefaultController.php
@@ -282,7 +282,7 @@ public function actionIndex(string $template, array $variables = [], array $filt
                         if ($includeDescendants) {
                             $relatedTo['element'] = array_filter(array_merge(
                                 $relatedTo['element'],
-                                array_column($relatedTo['element'], 'descendants')
+                                ...array_column($relatedTo['element'], 'descendants')
                             ));
                         }