diff --git a/src/Umbraco.Core/Models/IDataType.cs b/src/Umbraco.Abstractions/Models/IDataType.cs
similarity index 100%
rename from src/Umbraco.Core/Models/IDataType.cs
rename to src/Umbraco.Abstractions/Models/IDataType.cs
diff --git a/src/Umbraco.Core/Services/IContentService.cs b/src/Umbraco.Abstractions/Services/IContentService.cs
similarity index 99%
rename from src/Umbraco.Core/Services/IContentService.cs
rename to src/Umbraco.Abstractions/Services/IContentService.cs
index c7f71d33fc..2a34fcb898 100644
--- a/src/Umbraco.Core/Services/IContentService.cs
+++ b/src/Umbraco.Abstractions/Services/IContentService.cs
@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.ComponentModel;
 using Umbraco.Core.Models;
 using Umbraco.Core.Models.Membership;
-using Umbraco.Core.Persistence.DatabaseModelDefinitions;
 using Umbraco.Core.Persistence.Querying;
 
 namespace Umbraco.Core.Services
diff --git a/src/Umbraco.Core/Services/PublishResult.cs b/src/Umbraco.Abstractions/Services/PublishResult.cs
similarity index 100%
rename from src/Umbraco.Core/Services/PublishResult.cs
rename to src/Umbraco.Abstractions/Services/PublishResult.cs
diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
index eae73c28bc..67313999a5 100755
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -217,7 +217,6 @@
     <Compile Include="Models\IContentType.cs" />
     <Compile Include="Models\IContentTypeBase.cs" />
     <Compile Include="Models\IContentTypeComposition.cs" />
-    <Compile Include="Models\IDataType.cs" />
     <Compile Include="Models\Identity\IdentityMapDefinition.cs" />
     <Compile Include="Models\Identity\IdentityUser.cs" />
     <Compile Include="Models\Identity\UserLoginInfoWrapper.cs" />
@@ -976,7 +975,6 @@
     <Compile Include="Services\Implement\EntityXmlSerializer.cs" />
     <Compile Include="Services\Implement\ExternalLoginService.cs" />
     <Compile Include="Services\Implement\FileService.cs" />
-    <Compile Include="Services\IContentService.cs" />
     <Compile Include="Services\IContentTypeService.cs" />
     <Compile Include="Services\IContentTypeServiceBase.cs" />
     <Compile Include="Services\IdkMap.cs" />
@@ -1000,7 +998,6 @@
     <Compile Include="Services\Implement\PackagingService.cs" />
     <Compile Include="Services\Implement\PublicAccessService.cs" />
     <Compile Include="Services\PublicAccessServiceExtensions.cs" />
-    <Compile Include="Services\PublishResult.cs" />
     <Compile Include="Services\Implement\RedirectUrlService.cs" />
     <Compile Include="Services\Implement\RelationService.cs" />
     <Compile Include="Services\Implement\RepositoryService.cs" />