diff --git a/src/refl/BuildOption.cs b/src/refl/BuildOption.cs
index 8e3b8ec..f920b48 100644
--- a/src/refl/BuildOption.cs
+++ b/src/refl/BuildOption.cs
@@ -104,6 +104,10 @@ namespace refl
             {
                 Console.WriteLine("gen success!");
             }
+            else
+            {
+                File.Delete(InputFile);
+            }
             return 0;
         }
     }