diff --git a/CHANGELOG.md b/CHANGELOG.md
index 988ac0a816..61e4eb42a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ HumHub Changelog
 - Fix #5735: OEmbed migration might fail with more complex Endpoint URLs
 - Fix #5760: Fix context menu position on the right window side
 - Fix #5759: Fix tests on enable space module
+- Fix #5773: Fix PHP 8 incompatibility with conversion false to array
 
 
 1.11.2 (May 30, 2022)
diff --git a/protected/humhub/modules/comment/models/Comment.php b/protected/humhub/modules/comment/models/Comment.php
index 89ec84df35..f9466998d5 100644
--- a/protected/humhub/modules/comment/models/Comment.php
+++ b/protected/humhub/modules/comment/models/Comment.php
@@ -222,6 +222,9 @@ class Comment extends ContentAddonActiveRecord implements ContentOwner
 
         $cacheID = sprintf(static::CACHE_KEY_LIMITED, $model, $id);
         $comments = $useCaching ? Yii::$app->cache->get($cacheID) : [];
+        if (!is_array($comments)) {
+            $comments = [];
+        }
 
         if (!isset($comments[$limit]) || !is_array($comments[$limit])) {
             $objectCondition = ['object_model' => $model, 'object_id' => $id];