diff --git a/lib/algolia/search_index.rb b/lib/algolia/search_index.rb
index e2609b84..3bbcc48d 100644
--- a/lib/algolia/search_index.rb
+++ b/lib/algolia/search_index.rb
@@ -199,7 +199,7 @@ def get_object(object_id, opts = {})
       def get_objects(object_ids, opts = {})
         request_options        = symbolize_hash(opts)
         attributes_to_retrieve = get_option(request_options, 'attributesToRetrieve')
-        request_options.delete(:attributesToRetrieve)
+        opts.delete(:attributesToRetrieve)
 
         requests = []
         object_ids.each do |object_id|