diff --git a/src/Orchard.Web/Modules/Orchard.MediaLibrary/MediaFileName/MediaFileNameEditorSettings.cs b/src/Orchard.Web/Modules/Orchard.MediaLibrary/MediaFileName/MediaFileNameEditorSettings.cs
index 5de8ad88d..aadfad132 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaLibrary/MediaFileName/MediaFileNameEditorSettings.cs
+++ b/src/Orchard.Web/Modules/Orchard.MediaLibrary/MediaFileName/MediaFileNameEditorSettings.cs
@@ -25,7 +25,7 @@ namespace Orchard.MediaLibrary.MediaFileName {
         }
 
         public override IEnumerable<TemplateViewModel> TypeEditorUpdate(ContentTypeDefinitionBuilder builder, IUpdateModel updateModel) {
-            if (builder.Current.Settings["Stereotype"] == "Media") {
+            if (builder.Current.Settings.ContainsKey("Stereotype") && builder.Current.Settings["Stereotype"] == "Media") {
                 var model = new MediaFileNameEditorSettings();
                 if (updateModel.TryUpdateModel(model, "MediaFileNameEditorSettings", null, null)) {
                     builder.WithSetting("MediaFileNameEditorSettings.ShowFileNameEditor", model.ShowFileNameEditor.ToString());