diff --git a/app.py b/app.py
index 6d24d5c..104e71d 100644
--- a/app.py
+++ b/app.py
@@ -3261,7 +3261,7 @@ def attendance_report():
                     CONCAT(e.firstName, ' ', e.lastName) as employee_name
                 FROM attendance_data ad
                 LEFT JOIN qr_codes qc ON ad.qr_code_id = qc.id
-                LEFT JOIN employee e ON ad.employee_id = e.id
+                LEFT JOIN employee e ON CAST(ad.employee_id AS CHAR) = CAST(e.id AS CHAR)
                 WHERE 1=1
             """
         else:
@@ -3284,7 +3284,7 @@ def attendance_report():
                     CONCAT(e.firstName, ' ', e.lastName) as employee_name
                 FROM attendance_data ad
                 LEFT JOIN qr_codes qc ON ad.qr_code_id = qc.id
-                LEFT JOIN employee e ON ad.employee_id = e.id
+                LEFT JOIN employee e ON CAST(ad.employee_id AS CHAR) = CAST(e.id AS CHAR)
                 WHERE 1=1
             """