diff --git a/ProtoExport/ProtoBuffUnityHelper.cs b/ProtoExport/ProtoBuffUnityHelper.cs
index 4994c70..4dd9b90 100644
--- a/ProtoExport/ProtoBuffUnityHelper.cs
+++ b/ProtoExport/ProtoBuffUnityHelper.cs
@@ -80,7 +80,7 @@ public void Run(MessageInfoList messageInfoList, string outputPath, string names
                             {
                                 defaultValue = $" = new {operationField.Type}();";
                             }
-
+                            sb.AppendLine($"\t\t[ProtoMap(DisableMap = true)]");
                             sb.AppendLine($"\t\tpublic {operationField.Type} {operationField.Name} {{ get; set; }}{defaultValue}");
                         }