diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
index ca9b7d4034..6adce1944f 100755
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -241,6 +241,7 @@
     <Compile Include="Migrations\Upgrade\V_8_0_0\DataTypes\DefaultPreValueMigrator.cs" />
     <Compile Include="Migrations\Upgrade\V_8_0_0\DataTypes\RenamingPreValueMigrator.cs" />
     <Compile Include="Migrations\Upgrade\V_8_0_0\DataTypes\RichTextPreValueMigrator.cs" />
+    <Compile Include="Migrations\Upgrade\V_8_0_0\DataTypes\DropDownFlexiblePreValueMigrator.cs" />
     <Compile Include="Migrations\Upgrade\V_8_0_0\MergeDateAndDateTimePropertyEditor.cs" />
     <Compile Include="Models\Entities\EntityExtensions.cs" />
     <Compile Include="Migrations\Upgrade\V_8_0_0\DataTypes\PreValueMigratorBase.cs" />