diff --git a/attendance_iot/models/attendance_iot.py b/attendance_iot/models/attendance_iot.py
index 21d4a2e43..a4941578d 100644
--- a/attendance_iot/models/attendance_iot.py
+++ b/attendance_iot/models/attendance_iot.py
@@ -27,6 +27,10 @@ class AttendanceIot(models.Model):
             values = []
             employees = self.env['hr.employee'].search([('company_id', '=', record.company_id.id)])
             for employee in employees:
+                iot_user = self.env['attendance.iot.user'].search(
+                    [('attendance_iot_id', '=', record.id), ('employee_id', '=', employee.id)])
+                if iot_user:
+                    continue
                 values.append({
                     'employee_id': employee.id,
                     'attendance_iot_id': record.id