diff --git a/appveyor.yml b/appveyor.yml
index be95b88d6f..2cdf2ca986 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,4 +10,6 @@ build_script:
   - build.cmd --quiet verify
 clone_depth: 1
 test: off
-deploy: off
\ No newline at end of file
+deploy: off
+# Required for dotnet-test to work
+os: Visual Studio 2015