diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index a2e0dc5c67..f633f28e52 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -140,7 +140,9 @@
     <Compile Include="Computers\AppleII\AppleII.IMemoryDomains.cs">
       <DependentUpon>AppleII.cs</DependentUpon>
     </Compile>
-    <Compile Include="Computers\AppleII\AppleII.ISettable.cs" />
+    <Compile Include="Computers\AppleII\AppleII.ISettable.cs">
+        <DependentUpon>AppleII.cs</DependentUpon>
+    </Compile>
     <Compile Include="Computers\AppleII\AppleII.IStatable.cs">
       <DependentUpon>AppleII.cs</DependentUpon>
     </Compile>