diff --git a/src/ActivityPhp/Type/Util.php b/src/ActivityPhp/Type/Util.php
index 7b4919b..c6cfbfa 100644
--- a/src/ActivityPhp/Type/Util.php
+++ b/src/ActivityPhp/Type/Util.php
@@ -466,7 +466,7 @@ public static function validateMediaType($value): bool
     /**
      * Validate a Collection type
      *
-     * @param object $item
+     * @param object|array $item
      */
     public static function validateCollection($item): bool
     {
@@ -490,7 +490,7 @@ public static function validateCollection($item): bool
     /**
      * Validate a CollectionPage type
      *
-     * @param object $item
+     * @param object|array $item
      */
     public static function validateCollectionPage($item): bool
     {
@@ -500,6 +500,10 @@ public static function validateCollectionPage($item): bool
             return false;
         }
 
+        if (! is_object($item)) {
+            $item = (object) $item;
+        }
+
         self::hasProperties(
             $item,
             ['partOf'/*, 'next', 'prev'*/],