diff --git a/.mdlrc.style.rb b/.mdlrc.style.rb
index d4afd46c7f..7ebd2a4c4c 100644
--- a/.mdlrc.style.rb
+++ b/.mdlrc.style.rb
@@ -7,3 +7,4 @@ rule 'no-missing-space-atx'
 rule 'no-multiple-space-atx'
 rule 'no-missing-space-closed-atx'
 rule 'no-multiple-space-closed-atx'
+rule 'hr-style'