diff --git a/music_kraken/objects/collection.py b/music_kraken/objects/collection.py
index e0789d9..e1a8463 100644
--- a/music_kraken/objects/collection.py
+++ b/music_kraken/objects/collection.py
@@ -228,6 +228,7 @@ class Collection(Generic[T]):
         else:
             # merge only if the two objects are not the same
             if existing_object.id == __object.id:
+                exit()
                 return
 
             append_to._unmap_element(existing_object)