diff --git a/src/Umbraco.Core/Persistence/Dtos/ContentTypeDto.cs b/src/Umbraco.Core/Persistence/Dtos/ContentTypeDto.cs
index 2bd2203089..609392fbee 100644
--- a/src/Umbraco.Core/Persistence/Dtos/ContentTypeDto.cs
+++ b/src/Umbraco.Core/Persistence/Dtos/ContentTypeDto.cs
@@ -28,8 +28,8 @@ namespace Umbraco.Core.Persistence.Dtos
         [NullSetting(NullSetting = NullSettings.Null)]
         public string Icon { get; set; }
 
-        //[Column("thumbnail")]
-        //[Constraint(Default = "folder.png")]
+        [Column("thumbnail")]
+        [Constraint(Default = "folder.png")]
         [ResultColumn]
         public string Thumbnail { get; set; }
 
diff --git a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
index 6dd37ed2aa..147912ed41 100644
--- a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
+++ b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
@@ -80,7 +80,6 @@
   </ItemGroup>
   <ItemGroup>
     <Folder Include="App_Data\" />
-    <Folder Include="Config\thumbnails\" />
     <Folder Include="Views\MacroPartials\" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Umbraco.Web.UI/config/thumbnails/feature.jpg b/src/Umbraco.Web.UI/config/thumbnails/feature.jpg
deleted file mode 100644
index 8f8a62091c..0000000000
Binary files a/src/Umbraco.Web.UI/config/thumbnails/feature.jpg and /dev/null differ
diff --git a/src/Umbraco.Web.UI/config/thumbnails/feature1.jpg b/src/Umbraco.Web.UI/config/thumbnails/feature1.jpg
deleted file mode 100644
index 9ddaadef20..0000000000
Binary files a/src/Umbraco.Web.UI/config/thumbnails/feature1.jpg and /dev/null differ
diff --git a/src/Umbraco.Web.UI/config/thumbnails/feature11.jpg b/src/Umbraco.Web.UI/config/thumbnails/feature11.jpg
deleted file mode 100644
index 0cc0715bda..0000000000
Binary files a/src/Umbraco.Web.UI/config/thumbnails/feature11.jpg and /dev/null differ
diff --git a/src/Umbraco.Web.UI/config/thumbnails/rte.jpg b/src/Umbraco.Web.UI/config/thumbnails/rte.jpg
deleted file mode 100644
index 02d118ba17..0000000000
Binary files a/src/Umbraco.Web.UI/config/thumbnails/rte.jpg and /dev/null differ