diff --git a/readpaf.py b/readpaf.py
index 9465506..4fc6930 100644
--- a/readpaf.py
+++ b/readpaf.py
@@ -35,7 +35,7 @@ def _fmt_tags(self):
 
     def blast_identity(self):
         """BLAST identity, see:
-        https://lh3.github.io/2018/11/25/on-the-definition-of-sequence-blast_identity
+        https://lh3.github.io/2018/11/25/on-the-definition-of-sequence-identity
         """
         return self[9] / self[10]