diff --git a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
index 4a485cb2f..e556c6c0e 100644
--- a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
+++ b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
@@ -359,7 +359,7 @@ namespace IRaCIS.Core.API.Controllers
             finally
             {
 
-                studyMonitor.StudyCode = studycode;
+                studyMonitor.StudyCode = archiveResult.ArchivedDicomStudies.FirstOrDefault()?.StudyCode;
                 studyMonitor.UploadFinishedTime = DateTime.Now;
                 await _repository.AddAsync(studyMonitor, true);
 
diff --git a/IRaCIS.Core.API/appsettings.json b/IRaCIS.Core.API/appsettings.json
index ce62d8ce0..fc848d653 100644
--- a/IRaCIS.Core.API/appsettings.json
+++ b/IRaCIS.Core.API/appsettings.json
@@ -73,9 +73,9 @@
 
     "QCChallengeCodePrefix": "Q",
 
-    "NoneDicomStudyCodePrefix": "ST",
+    "NoneDicomStudyCodePrefix": "NST",
 
-    "DicomStudyCodePrefix": "NST",
+    "DicomStudyCodePrefix": "ST",
 
     "DefaultPassword": "123456",