diff --git a/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs b/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
index a3da831..bf0a5ee 100644
--- a/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
+++ b/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
@@ -43,7 +43,7 @@ namespace RIZO.Model.MES.recipe.Dto
 
         public DateTime? UpdatedTime { get; set; }
 
-        public int Ifcheck { get; set; }
+        public int? Ifcheck { get; set; }
 
     }
 }
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