diff --git a/cmd/tools/vdoc/vdoc.v b/cmd/tools/vdoc/vdoc.v
index 4c9cc501c4..91fe834d81 100644
--- a/cmd/tools/vdoc/vdoc.v
+++ b/cmd/tools/vdoc/vdoc.v
@@ -399,7 +399,7 @@ fn doc_node_html(dd doc.DocNode, link string, head bool, tb &table.Table) string
 	mut dnw := strings.new_builder(200)
 	link_svg := '<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg>'
 	head_tag := if head { 'h1' } else { 'h2' }
-	md_content := markdown.to_html(dd.comment)
+	md_content := markdown.to_html(html_tag_escape(dd.comment))
 	hlighted_code := html_highlight(dd.content, tb)
 	node_class := if dd.kind == .const_group { ' const' } else { '' }
 	sym_name := get_sym_name(dd)
@@ -433,6 +433,10 @@ fn doc_node_html(dd doc.DocNode, link string, head bool, tb &table.Table) string
 	return dnw_str
 }
 
+fn html_tag_escape(str string) string {
+	return str.replace_each(['<', '&lt;', '>', '&gt;'])
+}
+
 fn get_sym_name(dn doc.DocNode) string {
 	sym_name := if dn.parent_name.len > 0 && dn.parent_name != 'void' {
 		'($dn.parent_name) $dn.name'