diff --git a/IRaCIS.Core.Application/Service/QC/QCOperationService.cs b/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
index 93ab00eea..71d460c9b 100644
--- a/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
+++ b/IRaCIS.Core.Application/Service/QC/QCOperationService.cs
@@ -1243,7 +1243,7 @@ namespace IRaCIS.Core.Application.Image.QA
 						SubjectVisitId = item,
 					});
 
-					if (clinicalData.Any(x => x.ClinicalDataLevel == ClinicalLevel.Study && x.ClinicalUploadType == ClinicalUploadType.PDF && x.PDFFileList.Count() == 0))
+					if (!clinicalData.Any(x => x.ClinicalDataLevel == ClinicalLevel.Study && x.ClinicalUploadType == ClinicalUploadType.PDF && x.PDFFileList.Count() > 0))
 					{
 						throw new BusinessValidationFailedException(_localizer["QCOperation_NeedStudyClinical"]);
 					}