diff --git a/app/Exports/DutyReportExport.php b/app/Exports/DutyReportExport.php
index 04b39ba..ff0e9c8 100644
--- a/app/Exports/DutyReportExport.php
+++ b/app/Exports/DutyReportExport.php
@@ -90,7 +90,7 @@ class DutyReportExport
     private function presentPatient(array $patient, bool $withDiagnosis = true): array
     {
         $age = ! empty($patient['birth_date'])
-            ? Carbon::parse($patient['birth_date'])->diffInYears(Carbon::parse($this->dateRange[1]))
+            ? (int) Carbon::parse($patient['birth_date'])->diffInYears(Carbon::parse($this->dateRange[1]))
             : null;
 
         return [