diff --git a/src/main/frontend/handler/editor.cljs b/src/main/frontend/handler/editor.cljs
index e905d4f82e..759339a487 100644
--- a/src/main/frontend/handler/editor.cljs
+++ b/src/main/frontend/handler/editor.cljs
@@ -3524,9 +3524,10 @@
 
 (defn set-heading!
   [block-id format heading]
-  (if (and (= format :markdown) (not (true? heading)))
+  (if (= format :markdown)
     (let [repo (state/get-current-repo)
           block (db/entity [:block/uuid block-id])
+          heading (if (true? heading) 2 heading)
           content' (commands/set-markdown-heading (:block/content block) heading)]
       (save-block! repo block-id content'))
     (do