diff --git a/src/Discord/Helpers/CollectionTrait.php b/src/Discord/Helpers/CollectionTrait.php
index ac20e9148..6fe542124 100644
--- a/src/Discord/Helpers/CollectionTrait.php
+++ b/src/Discord/Helpers/CollectionTrait.php
@@ -467,7 +467,11 @@ public function unique(int $flags = SORT_STRING)
      */
     public function merge($collection): self
     {
-        $this->items = array_merge($this->items, $collection->toArray());
+        $items = $collection instanceof CollectionInterface
+            ? $collection->toArray()
+            : $collection;
+
+        $this->items = array_merge($this->items, $items);
 
         return $this;
     }