diff --git a/build/NetFX.props b/build/NetFX.props
new file mode 100644
index 0000000..2d3b400
--- /dev/null
+++ b/build/NetFX.props
@@ -0,0 +1,6 @@
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net461' and '$(OS)' == 'Unix' ">
+    <FrameworkPathOverride>/usr/lib/mono/4.6.1-api</FrameworkPathOverride>
+    <FrameworkPathOverride Condition="$([MSBuild]::IsOsPlatform('OSX'))">/Library/Frameworks/Mono.framework/Versions/Current/lib/mono/4.6.1-api</FrameworkPathOverride>
+  </PropertyGroup>
+</Project>