diff --git a/kernel/model/box.go b/kernel/model/box.go
index 390f6935f..dbb012dc4 100644
--- a/kernel/model/box.go
+++ b/kernel/model/box.go
@@ -497,6 +497,8 @@ func parseKTree(kramdown []byte) (ret *parse.Tree) {
 func normalizeTree(tree *parse.Tree) (yfmRootID, yfmTitle, yfmUpdated string) {
 	if nil == tree.Root.FirstChild {
 		tree.Root.AppendChild(treenode.NewParagraph(""))
+	} else if !tree.Root.FirstChild.IsBlock() || ast.NodeKramdownBlockIAL == tree.Root.FirstChild.Type {
+		tree.Root.PrependChild(treenode.NewParagraph(""))
 	}
 
 	var unlinks []*ast.Node