diff --git a/CollectionArray.php b/CollectionArray.php
index 6ef5d38..d8e3cce 100755
--- a/CollectionArray.php
+++ b/CollectionArray.php
@@ -165,7 +165,7 @@ protected function addMultiple($items)
             }
         }
         if (empty($array) == false) {
-            $this->array = array_merge($this->array, $array);
+            $this->array = $this->array + $array;
         }
     }