diff --git a/samples/BindingDemo/BindingDemo.csproj b/samples/BindingDemo/BindingDemo.csproj
index 3005fdbc51..a3f16dc222 100644
--- a/samples/BindingDemo/BindingDemo.csproj
+++ b/samples/BindingDemo/BindingDemo.csproj
@@ -4,6 +4,7 @@
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
     <ProjectReference Include="..\..\src\Linux\Avalonia.LinuxFramebuffer\Avalonia.LinuxFramebuffer.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.ReactiveUI\Avalonia.ReactiveUI.csproj" />
   </ItemGroup>
diff --git a/samples/ControlCatalog/ControlCatalog.csproj b/samples/ControlCatalog/ControlCatalog.csproj
index 4c2769bcc4..11c0a4fa68 100644
--- a/samples/ControlCatalog/ControlCatalog.csproj
+++ b/samples/ControlCatalog/ControlCatalog.csproj
@@ -21,6 +21,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\packages\Avalonia\Avalonia.csproj" />
+    <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.ReactiveUI\Avalonia.ReactiveUI.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Controls.DataGrid\Avalonia.Controls.DataGrid.csproj" />
   </ItemGroup>
diff --git a/samples/RenderDemo/RenderDemo.csproj b/samples/RenderDemo/RenderDemo.csproj
index 3005fdbc51..a3f16dc222 100644
--- a/samples/RenderDemo/RenderDemo.csproj
+++ b/samples/RenderDemo/RenderDemo.csproj
@@ -4,6 +4,7 @@
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
     <ProjectReference Include="..\..\src\Linux\Avalonia.LinuxFramebuffer\Avalonia.LinuxFramebuffer.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.ReactiveUI\Avalonia.ReactiveUI.csproj" />
   </ItemGroup>
diff --git a/samples/VirtualizationDemo/VirtualizationDemo.csproj b/samples/VirtualizationDemo/VirtualizationDemo.csproj
index 3005fdbc51..a3f16dc222 100644
--- a/samples/VirtualizationDemo/VirtualizationDemo.csproj
+++ b/samples/VirtualizationDemo/VirtualizationDemo.csproj
@@ -4,6 +4,7 @@
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
     <ProjectReference Include="..\..\src\Linux\Avalonia.LinuxFramebuffer\Avalonia.LinuxFramebuffer.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.ReactiveUI\Avalonia.ReactiveUI.csproj" />
   </ItemGroup>
diff --git a/src/Avalonia.Dialogs/Avalonia.Dialogs.csproj b/src/Avalonia.Dialogs/Avalonia.Dialogs.csproj
index cb86e271a6..f54ddf32be 100644
--- a/src/Avalonia.Dialogs/Avalonia.Dialogs.csproj
+++ b/src/Avalonia.Dialogs/Avalonia.Dialogs.csproj
@@ -13,7 +13,6 @@
   <Import Project="..\..\build\BuildTargets.targets" />
 
   <ItemGroup>
-    <ProjectReference Include="..\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
     <ProjectReference Include="..\Markup\Avalonia.Markup.Xaml\Avalonia.Markup.Xaml.csproj" />
   </ItemGroup>
 </Project>