diff --git a/NBTModel/NBTModel.csproj b/NBTModel/NBTModel.csproj
index e6fd536..fa977f1 100644
--- a/NBTModel/NBTModel.csproj
+++ b/NBTModel/NBTModel.csproj
@@ -40,6 +40,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Data\CompoundTagContainer.cs" />
+    <Compile Include="Data\Nodes\AbstractFileDataNode.cs" />
     <Compile Include="Data\Nodes\CubicRegionDataNode.cs" />
     <Compile Include="Data\CubicRegionFile.cs" />
     <Compile Include="Data\Nodes\DataNode.cs" />