diff --git a/lib/queryalize/serializable_query.rb b/lib/queryalize/serializable_query.rb
index be4080c..1c0f454 100644
--- a/lib/queryalize/serializable_query.rb
+++ b/lib/queryalize/serializable_query.rb
@@ -66,7 +66,7 @@ def _dump(depth)
     end
 
     def query_method?(name)
-      ActiveRecord::QueryMethods.public_instance_methods.include?(name.to_s)
+      ActiveRecord::QueryMethods.public_instance_methods.include?(name.to_sym)
     end
 
     def chain(name, *args)