diff --git a/src/pages/archivio/2024-2025/aritmetica.md b/src/pages/archivio/2024-2025/aritmetica.md
index d81ff5b..5b65e90 100644
--- a/src/pages/archivio/2024-2025/aritmetica.md
+++ b/src/pages/archivio/2024-2025/aritmetica.md
@@ -7,14 +7,14 @@ tutors:
   - type: email
     value: n.cognome@studenti.unipi.it
   - type: sito
-    value: https://poisson.phc.dm.unipi.it/~sgubin/
+    value: 'https://poisson.phc.dm.unipi.it/~sgubin'
 - name: Alessandro Fenu
   image: /tutors/alessandro-fenu.jpg
   contacts:
   - type: email
     value: a.fenu3@studenti.unipi.it
   - type: website
-    value: 'https://poisson.phc.dm.unipi.it/~afenu/'
+    value: 'https://poisson.phc.dm.unipi.it/~afenu'
 
 ---
 <p>