diff --git a/.mdl_style.rb b/.mdl_style.rb
index e9d8d3e8f68e091469349a11eb3ae652698a01f1..12948d4549e69757fdaeebe783270518658e99a1 100644
--- a/.mdl_style.rb
+++ b/.mdl_style.rb
@@ -4,4 +4,5 @@ all
 # default in next version, remove then
 #   "MD003": { "style": "atx_closed" 
 # rule 'MD007', :indent => 3
-rule 'MD029', :style => :ordered
+# rule 'MD029', :style => :ordered
+rule "MD029", style: "ordered"