diff --git a/lib/Tmdb/Factory/People/CastFactory.php b/lib/Tmdb/Factory/People/CastFactory.php
index 87dd43f6..dfbc8d86 100644
--- a/lib/Tmdb/Factory/People/CastFactory.php
+++ b/lib/Tmdb/Factory/People/CastFactory.php
@@ -33,8 +33,10 @@ public function createCollection(array $data = array(), $person = null)
     {
         $collection = new Cast();
 
+        $class = get_class($person);
+
         foreach($data as $item) {
-            $collection->add(null, $this->create($item, $person));
+            $collection->add(null, $this->create($item, new $class()));
         }
 
         return $collection;
diff --git a/lib/Tmdb/Factory/People/CrewFactory.php b/lib/Tmdb/Factory/People/CrewFactory.php
index deab2ffb..e5015493 100644
--- a/lib/Tmdb/Factory/People/CrewFactory.php
+++ b/lib/Tmdb/Factory/People/CrewFactory.php
@@ -33,8 +33,10 @@ public function createCollection(array $data = array(), $person = null)
     {
         $collection = new Crew();
 
+        $class = get_class($person);
+
         foreach($data as $item) {
-            $collection->add(null, $this->create($item, $person));
+            $collection->add(null, $this->create($item, new $class()));
         }
 
         return $collection;