diff --git a/PEIS/Utils/ReportHelper.cs b/PEIS/Utils/ReportHelper.cs
index 10d5890..e2d32db 100644
--- a/PEIS/Utils/ReportHelper.cs
+++ b/PEIS/Utils/ReportHelper.cs
@@ -504,7 +504,7 @@ namespace PEIS.Utils
                 rpt.SetParameterValue("CardNo", regInfo.CardNo);
                 rpt.SetParameterValue("HospitalName", Global._hospital?.Name);
 
-                if (regInfo.Photo == null)
+                if (string.IsNullOrEmpty(regInfo.Photo))
                 {
                     rpt.SetParameterValue("Avatar", regInfo.Photo);
                 }