diff --git a/src/data.rs b/src/data.rs
index b986853..dc85d28 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -66,7 +66,7 @@ pub struct Set {
 impl Card {
     pub fn extended_info(&self) -> Result<String, fmt::Error> {
         let mut s = String::with_capacity(1000);
-        write!(s, "<p><a href=\"https://db.ygorganization.com/search#card:{}\">Rulings</a> – <a href=\"https://yugipedia.com/wiki/{}\">Yugipedia</a></p>", &self.name, &self.id)?;
+        write!(s, "<p><a href=\"https://db.ygorganization.com/search#card:{}\">Rulings</a> – <a href=\"https://yugipedia.com/wiki/{:08}\">Yugipedia</a></p>", &self.name, &self.id)?;
         s.push_str("<h3>Printings:</h3>");
         for printing in &self.card_sets {
             write!(s, "{}: {} ({})", printing.set_name, printing.set_code, printing.set_rarity)?;