diff --git a/lib/active_model/serializer/adapter/json_api.rb b/lib/active_model/serializer/adapter/json_api.rb
index 0d93cac5d..3f0057a8c 100644
--- a/lib/active_model/serializer/adapter/json_api.rb
+++ b/lib/active_model/serializer/adapter/json_api.rb
@@ -18,7 +18,7 @@ def serializable_hash(options = {})
 
             serializer.each_association do |name, association, opts|
               @hash[@root][:links] ||= {}
-              unless options[:embed] == :ids
+              unless opts[:embed] == :ids
                 @hash[:linked] ||= {}
               end
 
diff --git a/test/adapter/json_api/has_many_embed_ids.rb b/test/adapter/json_api/has_many_embed_ids_test.rb
similarity index 100%
rename from test/adapter/json_api/has_many_embed_ids.rb
rename to test/adapter/json_api/has_many_embed_ids_test.rb