diff --git a/Controllers/DisableController.cs b/Controllers/DisableController.cs
index dbb77e5..5751796 100644
--- a/Controllers/DisableController.cs
+++ b/Controllers/DisableController.cs
@@ -1760,6 +1760,9 @@ namespace BMA.EHR.Recurit.Exam.Service.Controllers
                 // preload score
                 var score = rec_import.ScoreImport.Scores
                     .Where(s => !string.IsNullOrEmpty(s.ExamId))
+                    .GroupBy(x => x.ExamId)
+                    .Where(g => g.Count() == 1)
+                    .Select(g => g.First())
                     .ToDictionary(s => s.ExamId, s => s);
 
                 // ถ้าไม่มีผลคะแนนสอบคัดเลือกผู้พิการให้จบการทำงาน