diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
index 3573a1d68..78a3636ab 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
@@ -834,7 +834,7 @@ namespace IRaCIS.Application.Services
         public async Task<List<string>> GetTrialGroupNameList(GetTrialGroupNameListInDto inDto)
         {
             var result = await _readingQuestionTrialRepository.Where(x => x.ReadingQuestionCriterionTrialId == inDto.CriterionId && x.Type == "group")
-                .WhereIf(inDto.ReadingCriterionPageId!=null,x=>x.ReadingCriterionPageId==inDto.ReadingCriterionPageId)
+                .Where(x=>x.ReadingCriterionPageId==inDto.ReadingCriterionPageId)
                   .Select(x => x.GroupName).ToListAsync();
 
             return result;