diff --git a/public/bookandgo.php b/public/bookandgo.php
index ac2e670..ed71dd1 100644
--- a/public/bookandgo.php
+++ b/public/bookandgo.php
@@ -57,7 +57,7 @@ $stmtUser->close();
 
 // Inserisce la nuova prenotazione in bookingclass
 $insertQuery = "INSERT INTO bookingclass (idserviceschedule, iduser, prevbookingstart, idprevserviceschedule, idservice, idorder, bookingstart, status) 
-                VALUES (?, ?, '0', '0', ?, ?, ?, 'pending')";
+                VALUES (?, ?, NULL, '0', ?, ?, ?, 'pending')";
 $stmt = $conn->prepare($insertQuery);
 $stmt->bind_param("iiiis", $idnewbooking, $iduser, $idservicenew, $idorder, $newtime);
 if (!$stmt->execute()) {