diff --git a/CompanyManagment.Application/EmployeeDocumentsApplication.cs b/CompanyManagment.Application/EmployeeDocumentsApplication.cs
index a84392b8..bce8a935 100644
--- a/CompanyManagment.Application/EmployeeDocumentsApplication.cs
+++ b/CompanyManagment.Application/EmployeeDocumentsApplication.cs
@@ -1735,7 +1735,7 @@ namespace CompanyManagment.Application
             if (file.Length > (50 * 1024 * 1024))
                 return op.Failed("حجم فایل نمی تواند بیشتر از 50 مگابایت باشد");
 
-            if (!allowedExtensions.Contains(fileExtension))
+            if (!allowedExtensions.Contains(fileExtension.ToLower()))
             {
                 var operationMessage = ":فرمت فایل باید یکی از موارد زیر باشد";
                 operationMessage += "\n";