diff --git a/appveyor.yml b/appveyor.yml
index 265df8f1f5..636a7618d3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,4 @@ build_script:
   - build.cmd --quiet verify
 clone_depth: 1
 test: off
-deploy: off
-environment:
-  NO_PARALLEL_TEST_PROJECTS: Microsoft.AspNetCore.Server.Kestrel.FunctionalTests
\ No newline at end of file
+deploy: off
\ No newline at end of file