diff --git a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
index 73efc46c6..31dadf49c 100644
--- a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
+++ b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
@@ -566,7 +566,7 @@ namespace IRaCIS.Core.API.Controllers
                 templateFileStream.Seek(0, SeekOrigin.Begin);
 
 
-                var ossRelativePath = oSSService.UploadToOSS(fileStream, "InspectionUpload/Check", realFileName);
+                var ossRelativePath = oSSService.UploadToOSS(fileStream, "InspectionUpload/Check", $"{Guid.NewGuid()}_" + realFileName);
 
                 await _repository.AddAsync(new InspectionFile() { FileName = realFileName, RelativePath = ossRelativePath, TrialId = trialId });
 
@@ -997,7 +997,7 @@ namespace IRaCIS.Core.API.Controllers
                     throw new BusinessValidationFailedException(StaticData.International("UploadDownLoad_TemplateUploadData"));
                 }
 
-                var ossRelativePath = oSSService.UploadToOSS(fileStream, "InspectionUpload/SiteSurvey", realFileName);
+                var ossRelativePath = oSSService.UploadToOSS(fileStream, "InspectionUpload/SiteSurvey", $"{Guid.NewGuid()}_"+ realFileName);
 
                 await _inspectionFileRepository.AddAsync(new InspectionFile() { FileName = realFileName, RelativePath = ossRelativePath, TrialId = trialId });