diff --git a/lib/active_model/serializer/adapter.rb b/lib/active_model/serializer/adapter.rb
index f0a82573..3a883dad 100644
--- a/lib/active_model/serializer/adapter.rb
+++ b/lib/active_model/serializer/adapter.rb
@@ -16,8 +16,8 @@ module ActiveModel
         raise NotImplementedError, 'This is an abstract method. Should be implemented at the concrete adapter.'
       end
 
-      def to_json(options = {})
-        serializable_hash(options).to_json
+      def as_json(options = {})
+        serializable_hash(options)
       end
     end
   end