diff --git a/tooling/Microsoft.VisualStudio.RazorExtension/Microsoft.VisualStudio.RazorExtension.csproj b/tooling/Microsoft.VisualStudio.RazorExtension/Microsoft.VisualStudio.RazorExtension.csproj
index b5cdd0ff72..ae1662250a 100644
--- a/tooling/Microsoft.VisualStudio.RazorExtension/Microsoft.VisualStudio.RazorExtension.csproj
+++ b/tooling/Microsoft.VisualStudio.RazorExtension/Microsoft.VisualStudio.RazorExtension.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="15.0">
   <Import Project="..\..\packages\Microsoft.VSSDK.BuildTools.15.0.25901-RC\build\Microsoft.VSSDK.BuildTools.props" Condition="Exists('..\..\packages\Microsoft.VSSDK.BuildTools.15.0.25901-RC\build\Microsoft.VSSDK.BuildTools.props')" />
   <PropertyGroup>
     <MinimumVisualStudioVersion>15.0</MinimumVisualStudioVersion>