diff --git a/src/cascadia/TerminalApp/TerminalAppLib.vcxproj b/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
index 8a49bf37a..9360e9dfa 100644
--- a/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
+++ b/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
@@ -318,7 +318,29 @@
     </ProjectReference>
     <!-- For whatever reason, we can't include the TerminalControl and
     TerminalSettings projects' winmds via project references. So we'll have to
-    manually include the winmds as References below -->
+    manually include the winmds as References below
+
+    BODGY: we do need to add a ProjectReference to TerminalControl.vcxproj,
+    with Private=true, ReferenceOutputAssembly=false, so that Visual Studio's
+    "Fast Up-to-date Check" will work with this project. If we don't, the Fast
+    Up-to-date Check will look for the .xaml files from that project in our
+    output, which won't actually be there.
+
+    We do still need to separately reference the winmds manually below, which is annoying.
+    -->
+    <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalControl\dll\TerminalControl.vcxproj">
+      <!-- Private:true and ReferenceOutputAssembly:false, in combination with
+      the manual reference to TerminalControl.winmd below make sure that this
+      project will compile correct, and that we won't roll up the TermControl
+      xbf's into the packaging project twice. -->
+      <Private>true</Private>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+    <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalSettingsEditor\Microsoft.Terminal.Settings.Editor.vcxproj">
+      <Private>true</Private>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+
   </ItemGroup>
   <PropertyGroup>
     <!-- This is a hack to get the ARM64 CI build working. See
diff --git a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
index 5afc82375..bdd0fd38b 100644
--- a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
+++ b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
@@ -197,9 +197,29 @@
       <Project>{CA5CAD1A-039A-4929-BA2A-8BEB2E4106FE}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
     </ProjectReference>
+
     <!-- For whatever reason, we can't include the TerminalControl and
     TerminalSettings projects' winmds via project references. So we'll have to
-    manually include the winmds as References below -->
+    manually include the winmds as References below
+
+    BODGY: we do need to add a ProjectReference to TerminalControl.vcxproj,
+    with Private=true, ReferenceOutputAssembly=false, so that Visual Studio's
+    "Fast Up-to-date Check" will work with this project. If we don't, the Fast
+    Up-to-date Check will look for the .xaml files from that project in our
+    output, which won't actually be there.
+
+    We do still need to separately reference the winmds manually below, which is annoying.
+    -->
+
+    <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalControl\dll\TerminalControl.vcxproj">
+      <!-- Private:true and ReferenceOutputAssembly:false, in combination with
+      the manual reference to TerminalControl.winmd below make sure that this
+      project will compile correct, and that we won't roll up the TermControl
+      xbf's into the packaging project twice. -->
+      <Private>true</Private>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+
   </ItemGroup>
   <ItemGroup>
     <!-- Manually add references to each of our dependent winmds. Mark them as
@@ -266,4 +286,5 @@
   </Target>
   <Import Project="$(SolutionDir)build\rules\CollectWildcardResources.targets" />
   <Import Project="..\..\..\packages\Microsoft.VisualStudio.Setup.Configuration.Native.2.3.2262\build\native\Microsoft.VisualStudio.Setup.Configuration.Native.targets" Condition="Exists('..\..\..\packages\Microsoft.VisualStudio.Setup.Configuration.Native.2.3.2262\build\native\Microsoft.VisualStudio.Setup.Configuration.Native.targets')" />
+
 </Project>
diff --git a/src/cascadia/TerminalSettingsModel/dll/Microsoft.Terminal.Settings.Model.vcxproj b/src/cascadia/TerminalSettingsModel/dll/Microsoft.Terminal.Settings.Model.vcxproj
index 1eaad6a0c..847dc470b 100644
--- a/src/cascadia/TerminalSettingsModel/dll/Microsoft.Terminal.Settings.Model.vcxproj
+++ b/src/cascadia/TerminalSettingsModel/dll/Microsoft.Terminal.Settings.Model.vcxproj
@@ -65,7 +65,7 @@
     </ProjectReference>
 
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalControl\dll\TerminalControl.vcxproj">
-      <!-- Private:false and ReferenceOutputAssembly:false, in combination with
+      <!-- Private:true and ReferenceOutputAssembly:false, in combination with
       the manual reference to TerminalControl.winmd below make sure that this
       project will compile correct, and that we won't roll up the TermControl
       xbf's into the packaging project twice. -->