diff --git a/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj b/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
index 6a80be28a7..f646702dcc 100644
--- a/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
+++ b/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
@@ -43,6 +43,7 @@
     <Reference Include="System.Reactive.Core, Version=3.0.0.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\System.Reactive.Core.3.0.0\lib\net45\System.Reactive.Core.dll</HintPath>
       <Private>True</Private>
+    </Reference>
     <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
     <Reference Include="Microsoft.CSharp" />