diff --git a/lib/grape-active_model_serializers/formatter.rb b/lib/grape-active_model_serializers/formatter.rb
index 50fba60..87f2b11 100644
--- a/lib/grape-active_model_serializers/formatter.rb
+++ b/lib/grape-active_model_serializers/formatter.rb
@@ -17,7 +17,7 @@ def fetch_serializer(resource, env)
           options = build_options_from_endpoint(endpoint)
 
           if serializer = options.fetch(:serializer, ActiveModel::Serializer.serializer_for(resource))
-            options[:scope] = endpoint.serialization_scope unless options.has_key?(:scope)
+            options[:scope] = endpoint unless options.has_key?(:scope)
             # ensure we have an root to fallback on
             options[:resource_name] = default_root(endpoint) if resource.respond_to?(:to_ary)
             serializer.new(resource, options.merge(other_options))