diff --git a/app.py b/app.py
index 368dd6d..74e7cd4 100644
--- a/app.py
+++ b/app.py
@@ -12,7 +12,7 @@ def update_file():
 if os.path.isfile('compiti.json'):
     with open('compiti.json', 'r') as f:
         compiti = json.load(f)
-        id_counter = 104
+        id_counter = compiti[-1]["id"] + 1
 else:
     compiti = [
     {"id": 1, "descrizione": "Compito matematica"},