diff --git a/kernel/model/export.go b/kernel/model/export.go
index 351da7fd4..a37e3fb65 100644
--- a/kernel/model/export.go
+++ b/kernel/model/export.go
@@ -2166,7 +2166,15 @@ func exportTree(tree *parse.Tree, wysiwyg, expandKaTexMacros, keepFold bool,
 	if addTitle {
 		if root, _ := getBlock(id, tree); nil != root {
 			root.IAL["type"] = "doc"
-			title := &ast.Node{Type: ast.NodeHeading, HeadingLevel: 1, KramdownIAL: parse.Map2IAL(root.IAL)}
+			title := &ast.Node{Type: ast.NodeHeading, HeadingLevel: 1}
+			for k, v := range root.IAL {
+				if "type" == k {
+					continue
+				}
+				title.SetIALAttr(k, v)
+			}
+			title.InsertAfter(&ast.Node{Type: ast.NodeKramdownBlockIAL, Tokens: parse.IAL2Tokens(title.KramdownIAL)})
+
 			content := html.UnescapeString(root.Content)
 			title.AppendChild(&ast.Node{Type: ast.NodeText, Tokens: []byte(content)})
 			ret.Root.PrependChild(title)