diff --git a/src/utils/markdown.rs b/src/utils/markdown.rs
index 78160db..66323f0 100644
--- a/src/utils/markdown.rs
+++ b/src/utils/markdown.rs
@@ -203,8 +203,9 @@ fn fix_headers_ids(html: &str) -> String {
         html,
         RewriteStrSettings {
             element_content_handlers: vec![element!("a[href^='#']", |el| {
-                el.set_attribute("href", &format!("#{}", el.get_attribute("id").unwrap()))
-                    .unwrap();
+                if let Some(id) = el.get_attribute("id") {
+                    el.set_attribute("href", &format!("#{id}")).unwrap();
+                };
                 Ok(())
             })],
             ..RewriteStrSettings::default()