diff --git a/src/Umbraco.Web/PropertyEditors/ValueConverters/MacroContainerValueConverter.cs b/src/Umbraco.Web/PropertyEditors/ValueConverters/MacroContainerValueConverter.cs
index f5a4c2dc09..436d131bcd 100644
--- a/src/Umbraco.Web/PropertyEditors/ValueConverters/MacroContainerValueConverter.cs
+++ b/src/Umbraco.Web/PropertyEditors/ValueConverters/MacroContainerValueConverter.cs
@@ -14,6 +14,7 @@ namespace Umbraco.Web.PropertyEditors.ValueConverters
     /// </summary>
     [PropertyValueType(typeof (IHtmlString))]
     [PropertyValueCache(PropertyCacheValue.All, PropertyCacheLevel.Request)]
+    [DefaultPropertyValueConverter]
     public class MacroContainerValueConverter : PropertyValueConverterBase
     {
         public override bool IsConverter(PublishedPropertyType propertyType)
diff --git a/src/Umbraco.Web/PropertyEditors/ValueConverters/MarkdownEditorValueConverter.cs b/src/Umbraco.Web/PropertyEditors/ValueConverters/MarkdownEditorValueConverter.cs
index 1de8d937d8..af66278815 100644
--- a/src/Umbraco.Web/PropertyEditors/ValueConverters/MarkdownEditorValueConverter.cs
+++ b/src/Umbraco.Web/PropertyEditors/ValueConverters/MarkdownEditorValueConverter.cs
@@ -9,6 +9,7 @@ namespace Umbraco.Web.PropertyEditors.ValueConverters
 {
     [PropertyValueType(typeof(IHtmlString))]
     [PropertyValueCache(PropertyCacheValue.All, PropertyCacheLevel.Request)]
+    [DefaultPropertyValueConverter]
     public class MarkdownEditorValueConverter : PropertyValueConverterBase
     {
         public override bool IsConverter(PublishedPropertyType propertyType)